Material Purity: The conductors are crafted from electrolytic copper with a minimum purity of 99.95%. This high purity ensures exceptional electrical conductivity, measuring at approximately 58 MS/m (megasiemens per meter) at 20°C. In comparison, Aluminum Conductors typically have a conductivity of around 37 MS/m, making copper far more efficient in transmitting electrical current with minimal power loss.

Cross-Sectional Sizes: These cables are available in a wide range of cross-sectional areas to accommodate different current-carrying needs. Common sizes include 0.5 mm², 0.75 mm², 1 mm², 1.5 mm², 2.5 mm², 4 mm², 6 mm², 10 mm², 16 mm², 25 mm², 35 mm², and 50 mm². Each size corresponds to a specific current rating:

Stranding Configuration: To enhance Flexibility and durability, the Copper Conductors are stranded rather than solid. The stranding follows Class 2 specifications as per IEC 60228, which involves twisting multiple thin Copper Wires into a single conductor. For example, a 2.5 mm² conductor may consist of 19 strands of 0.41 mm diameter copper wire. This stranding design allows the cable to bend easily without cracking, making it suitable for installation in tight spaces like wall cavities, conduits, and equipment enclosures. It also improves the conductor's resistance to mechanical stress, such as vibration in industrial environments.

DC Resistance: The DC resistance of the copper conductors is a critical parameter for minimizing power loss. At 20°C, the DC resistance values for common sizes are as follows:

Material Composition: The insulation is made of high-quality polyvinyl chloride, often blended with additives to enhance specific properties. These additives include flame retardants (such as aluminum trihydrate and magnesium hydroxide) to improve fire resistance, plasticizers to increase flexibility, and antioxidants to prevent degradation due to aging.

Thickness: The thickness of the PVC insulation varies depending on the conductor size and the intended application. For example:

Temperature Range: The PVC insulation is designed to operate within a specific temperature range. Standard grades of PVC insulation can withstand continuous operating temperatures from -20°C to 70°C. For applications requiring higher temperature resistance, specialized PVC formulations are available, extending the upper limit to 90°C. This temperature tolerance allows the cable to function reliably in both cold environments, such as unheated garages or outdoor installations in winter, and warm settings like near heating systems or in industrial facilities.

Flame Retardancy: As mentioned earlier, the PVC insulation complies with international flame-retardant standards. In addition to IEC 60332-1-2 and UL 1581, it also meets the requirements of GB/T 18380.1-2001 (Chinese standard for flame retardancy of cables). When exposed to fire, the insulation self-extinguishes within 60 seconds of removing the ignition source, preventing the spread of flames. It also limits the release of toxic smoke and corrosive gases, which is crucial for ensuring the safety of occupants in residential and commercial buildings during a fire emergency.

Outer Diameter: The outer diameter of the cable varies based on the conductor size and insulation thickness. For instance:

Weight per Unit Length: The weight of the cable per meter is influenced by the copper conductor and the PVC insulation. Typical weight values include:

Lighting circuits: Small-gauge cables (such as 0.5 mm², 0.75 mm²) are widely used in residential lighting circuits. Whether it's the main light in the living room, ceiling lights in bedrooms, or recessed downlights in kitchens and bathrooms, all rely on these cables to transmit electrical current. Their low-resistance characteristics ensure stable and bright illumination without flickering due to voltage fluctuations. At the same time, their flexible texture allows the cables to easily pass through ceiling joists and conduit within walls, facilitating installation during construction.

Power supply for household appliances: Household appliances of different power ratings require cables of corresponding specifications. For example, low-power devices such as televisions, computers, and mobile phone chargers can use 1 mm² or 1.5 mm² cables, while high-power appliances like air conditioners (1.5 horsepower and above), electric water heaters, and induction cooktops require 2.5 mm² or 4 mm² cables. Taking a 2-horsepower air conditioner as an example, its rated current is approximately 10 A. A 2.5 mm² cable has a rated current capacity of up to 20 A, which easily meets the power supply requirement. Moreover, the cable exhibits good heat dissipation performance during prolonged operation, avoiding safety hazards caused by overheating.

Smart home system connection: With the growing popularity of smart homes, this type of cable is also used to connect smart devices such as smart switches, smart outlets, and smart security cameras. Smart home devices typically require stable power supply; the high conductivity of Copper Cores ensures steady current transmission, while the good insulation properties of PVC prevent signal interference and guarantee the normal operation of smart devices. For example, smart security cameras require uninterrupted 24/7 power supply, and the reliability of the cable directly affects the camera's monitoring performance. Copper PVC Insulated Electrical Cables and Wires can provide continuous and stable power support.

Office Buildings：Lighting, office equipment (computers, printers, copiers, etc.), and central air conditioning systems in office buildings all rely on this type of cable for power supply. For lighting and general office equipment, 1.5 mm² and 2.5 mm² cables are commonly used; whereas outdoor units of central air conditioning systems and indoor fan coil units have higher power demands, typically requiring 4 mm² or 6 mm² cables. In addition, the emergency lighting system in office buildings is crucial for ensuring safe personnel evacuation. The cables used must have good flame retardancy. Copper PVC insulated electrical cables and wires feature a PVC insulation layer that meets relevant fire protection standards, effectively slowing down flame spread during fires and providing valuable time for evacuation.

Shopping Malls：Stores within shopping malls are densely packed and equipped with numerous electrical devices, including various lighting fixtures, escalators, refrigerated display cases, and POS checkout systems. Escalators require stable high-power electricity supply, typically using 10 mm² or 16 mm² cables; refrigerated display cases must operate 24 hours to ensure food freshness, and their continuous power supply needs can be met by 6 mm² or 10 mm² cables, whose PVC insulation provides corrosion resistance to protect the cables from damage due to the damp environment inside malls. Meanwhile, public and decorative lighting in mall areas demand high cable flexibility to accommodate different interior designs and layouts. The Stranded Conductor design of these cables makes them easy to bend and install.

Hotels：Hotel guest rooms, restaurants, meeting rooms, gyms and other areas require a large amount of cabling. Equipment in guest rooms such as TVs, refrigerators, air conditioners, and lighting fixtures use cables ranging from 1.5 mm² to 4 mm²; kitchen equipment in restaurants (such as ovens, stoves, dishwashers, etc.) have higher power demands and require cables from 6 mm² to 16 mm²; audio systems and projectors in meeting rooms have high requirements for power supply stability and anti-interference capability. The low resistance of copper cores and the good insulation properties of PVC insulation can ensure the normal operation of equipment and avoid negative impacts on meetings due to power issues.

Light Industrial Factories：In light industry factories, such as electronic component manufacturing plants, textile mills, and food processing plants, these cables are used to power production equipment and connect control circuits. In electronic component manufacturing plants, production equipment (such as pick-and-place machines and welding machines) requires high power supply precision; the cable's low DC resistance reduces voltage drop and ensures stable equipment operation. In textile mills, textile machinery generates vibration during operation; the cable's stranded conductor and flexible insulation can withstand mechanical stress caused by vibration, extending the cable's service life. In food processing plants, the environment is relatively humid and may involve chemical exposure from cleaning agents; the PVC insulation's Chemical Resistance protects the cable from corrosion, ensuring continuous production. Commonly used cable sizes range from 4 mm² to 25 mm², selected according to equipment power requirements.

Warehouses：Cables are required to power the lighting and ventilation systems in the warehouse, forklift charging equipment, and temperature control devices in storage areas. Warehouse lighting typically uses cables with cross-sectional areas of 1.5 mm² or 2.5 mm²; forklift charging equipment, which has higher power requirements, requires cables ranging from 10 mm² to 25 mm²; temperature control equipment (such as air conditioners and dehumidifiers) can use cables from 4 mm² to 10 mm² depending on their power consumption. Additionally, during cargo handling in the warehouse, cables may be subjected to compression and impact; the mechanical strength of PVC insulation provides a certain degree of protection, reducing the risk of cable damage.

Residential Solar Systems：In home solar power systems, Copper PVC Insulated Electrical Cables and Wires are used to connect solar panels, inverters, and household electrical networks. The direct current generated by solar panels needs to be transmitted via cables to the inverter, which converts it into alternating current before delivering it to the home grid or storing it in batteries. Since solar panels are typically installed on rooftops, the cables are exposed to outdoor environments and must withstand UV radiation, temperature fluctuations, and moisture. The PVC insulation of these cables provides excellent weather resistance, protecting against degradation from these environmental factors. Common cable sizes range from 4 mm² to 10 mm² to meet the current transmission requirements of solar power systems.

Small Wind Turbines：The power output from small wind turbines (typically installed in rural or remote areas) also needs to be transmitted via these cables to controllers and inverters. During operation, wind turbines generate vibrations, and the cable's flexible structure can accommodate such vibrating environments; at the same time, harsh outdoor weather conditions have little impact on the cable's performance, ensuring stable transmission of the electricity generated by the wind turbine.

Class 5 Stranding: This style involves using more and thinner copper wires, resulting in a highly Flexible Conductor. Class 5 Stranded Cables are ideal for applications where the cable needs to be frequently bent or moved, such as in portable electrical tools (e.g., drills, saws) and automotive wiring. The increased flexibility reduces the risk of conductor breakage due to repeated bending. However, Class 5 Cables have a slightly higher DC resistance than Class 2 Cables (e.g., a 2.5 mm² Class 5 cable may have a DC resistance of ≤12.5 Ω/km compared to ≤12.1 Ω/km for Class 2), so they are typically used for low-current, short-distance applications.

Solid Conductors: For applications where flexibility is not a priority, solid copper conductors are available. Solid conductors consist of a single, thick copper wire, offering lower DC resistance than Stranded Conductors (e.g., a 2.5 mm² solid conductor may have a DC resistance of ≤11.8 Ω/km). They are commonly used in fixed installations where the cable is not moved after installation, such as in the wiring of building walls and ceilings. However, solid conductors are less flexible and more prone to breakage if bent repeatedly, so they are not suitable for portable or dynamic applications.

Flame-Retardant Low Smoke (FRLS) PVC: This type of insulation is designed to release minimal smoke and toxic gases when exposed to fire, making it ideal for enclosed spaces like hospitals, data centers, and underground tunnels. FRLS PVC complies with stricter smoke density standards, such as IEC 61034, which limits the amount of smoke released during a fire. This ensures better visibility for evacuation and reduces the risk of respiratory harm to occupants.

Heat-Resistant PVC: For applications where the cable is exposed to higher temperatures (up to 90°C), heat-resistant PVC insulation is used. This formulation includes heat-stabilizing additives that prevent the insulation from softening or degrading at elevated temperatures. Heat-resistant PVC Cables are commonly used in industrial ovens, boiler rooms, and near heating systems.

Oil-Resistant PVC: In environments where the cable may come into contact with oil or grease (e.g., automotive engines, industrial machinery), oil-resistant PVC insulation is preferred. This type of insulation is formulated to resist swelling, hardening, or cracking when exposed to mineral oils, hydraulic fluids, and other petroleum-based products. It ensures the cable remains functional and maintains its electrical insulation properties even in oil-contaminated environments.

Single-Core Cables: These are the most common style, consisting of a single copper conductor surrounded by PVC insulation. Single-Core Cables are used for most general-purpose applications, such as powering appliances, lighting, and machinery. They are easy to install and can be routed through narrow spaces due to their compact size.

Multi-Core Cables: For applications where multiple circuits need to be routed together (e.g., in control systems or audio/video setups), Multi-Core Cables are used. These cables consist of two or more copper conductors, each insulated with PVC, and then bundled together under a single outer PVC Sheath. Multi-core cables reduce the number of cables needed for an installation, simplifying routing and reducing clutter. For example, a 3-core cable may be used in a three-phase electrical system, with each core carrying one phase of the current.

Armored Cables: In environments where the cable is at risk of mechanical damage (e.g., underground installations, industrial warehouses), armored cables are available. These cables have an additional layer of armor (usually made of steel or aluminum) between the insulation and the outer sheath. The armor provides protection against impact, compression, and rodent bites. However, armored cables are less flexible than non-armored cables and require specialized tools for installation.

Copper Rod Melting and Drawing: High-purity electrolytic copper rods (99.95% purity) are fed into a melting furnace, where they are heated to a temperature of approximately 1085°C (the melting point of copper). The molten copper is then extruded through a die to form a continuous copper wire of a specific diameter. This wire is then drawn through a series of dies with decreasing diameters to reduce its size to the desired thickness for the conductor strands. For example, to produce a 0.41 mm diameter strand (used in 2.5 mm² Class 2 conductors), the copper wire is drawn through multiple dies until it reaches the required diameter.

Stranding: The drawn Copper Strands are then fed into a stranding machine, which twists them together to form the final conductor. The number of strands and the twisting pattern depend on the conductor size and stranding class. For a 2.5 mm² Class 2 conductor, 19 strands of 0.41 mm diameter are twisted together in a helical pattern. The stranding machine ensures the strands are twisted evenly with a consistent pitch (the distance between consecutive twists), which is crucial for maintaining the conductor’s flexibility and electrical conductivity.

Annealing: After stranding, the conductor is annealed to improve its ductility and reduce internal stress. Annealing involves heating the conductor to a temperature of 350–400°C in a controlled atmosphere (usually nitrogen or hydrogen) to prevent oxidation. The conductor is then cooled slowly, which softens the copper and makes it more flexible. This step is essential for ensuring the conductor can withstand bending during installation without cracking.

PVC Compound Preparation: The PVC Insulation Material is prepared by mixing PVC resin with additives (flame retardants, plasticizers, antioxidants, and stabilizers) in a high-speed mixer. The mixture is heated to a temperature of 100–120°C to melt the PVC resin and distribute the additives evenly. This results in a homogeneous PVC compound that is ready for extrusion.

Extrusion: The prepaRed PVC compound is fed into an extruder, which consists of a heated barrel and a rotating screw. The screw pushes the PVC compound through the barrel, where it is heated to a temperature of 160–180°C to melt it into a molten state. The molten PVC is then forced through a crosshead die, which is designed to apply a uniform layer of insulation around the copper conductor. The conductor is pulled through the die at a constant speed, ensuring the insulation thickness is consistent along the entire length of the cable. The extrusion speed is carefully controlled to match the conductor pull speed—typically between 50–200 meters per minute, depending on the conductor size and insulation thickness.

Cooling and Curing: After extrusion, the Insulated Conductor is passed through a water cooling tank to cool and solidify the PVC insulation. The cooling tank is divided into multiple sections with decreasing water temperatures (from 60°C to 20°C), which ensures the insulation cools evenly and prevents cracking. For heat-resistant PVC insulation, an additional curing step may be required, where the insulated conductor is heated to 100–120°C for a specific period to activate the heat-stabilizing additives and improve the insulation’s thermal resistance.

Core Arrangement: The insulated conductors (known as “cores”) are first arranged in a specific pattern based on the cable design. Common arrangements include circular (for 2–4 Cores) and fan-shaped (for 5+ cores). For example, a 3-core cable may have the cores arranged in a triangular pattern to minimize the overall cable diameter, while a 4-core cable may use a square arrangement for balanced stress distribution.

Stranding Process: The arranged cores are fed into a cable stranding machine, which twists them together at a controlled pitch. The pitch (the distance between consecutive twists) is typically 12–20 times the outer diameter of the cable core to ensure the cores remain tightly bound without excessive stress. During stranding, a filler material (usually made of polypropylene or jute) may be added between the cores to fill gaps and maintain the cable’s circular shape. This filler also provides additional mechanical support and prevents the cores from shifting during installation.

Binder Application: After stranding, a binder tape (made of polyester or PVC) is wrapped around the cable core to hold the cores and filler in place. The binder tape is applied with a 50% overlap to ensure full coverage, preventing the core from unraveling during subsequent processing steps (e.g., outer sheath extrusion).

Outer Sheath Extrusion: For multi-core cables, an outer PVC sheath is extruded over the bound cable core to provide additional protection. The process is similar to insulation extrusion: PVC compound is fed into an extruder, melted, and forced through a die to form a uniform sheath around the cable core. The sheath thickness varies based on the cable size (e.g., 0.8–1.2 mm for small multi-core cables, 1.5–2.0 mm for large industrial multi-core cables) and is designed to withstand mechanical impact, moisture, and environmental wear. After extrusion, the cable is cooled in a water tank and inspected for surface defects and dimensional accuracy.

Raw Material Testing: Before production begins, samples of copper rods and PVC resin are tested to verify their quality. Copper rods are tested for purity (using atomic absorption spectroscopy) and electrical conductivity (using a conductivity meter). PVC resin is tested for melt flow rate (MFR)—a measure of its processability—and flame retardancy (using a vertical flame test). Additives such as flame retardants and plasticizers are also tested to ensure they meet the required specifications.

In-Process Testing: During production, regular tests are conducted to monitor the quality of the conductor and insulation. For the conductor, DC resistance is measured using a micro-ohmmeter (to ensure it is within the specified range), and tensile strength is tested using a tensile testing machine (to verify ductility). For the insulation, dielectric strength is tested by applying a high voltage (e.g., 2 kV for 1 minute) between the conductor and a ground electrode—if the insulation breaks down during the test, the cable is rejected.

Final Product Testing: After production is complete, the final cable undergoes a series of comprehensive tests:

Cardboard Drums: Cardboard drums are the most cost-effective option for bulk packaging of small to medium-sized cables (up to 10 mm²). These drums are made of 5-ply corrugated cardboard, with a diameter of 300–500 mm and a height of 400–600 mm. The inner surface of the drum is lined with a polyethylene film (0.1 mm thick) to prevent moisture ingress, and the cable is wound tightly around a central cardboard spool to avoid tangling. Each drum can hold 100–500 meters of cable (e.g., a 400 mm diameter drum can hold 300 meters of 2.5 mm² single-core cable). The drum is sealed with adhesive tape and labeled with key information: cable size, length, Conductor Material, insulation type, batch number, manufacturing date, and safety warnings (e.g., “Keep Dry,” “Avoid Mechanical Impact”).

Wooden Drums: For larger cables (16 mm² and above) or heavier bulk orders (≥500 meters), wooden drums are preferred due to their higher mechanical strength. These drums are made of pine or birch wood (compliant with ISPM 15—heat-treated to eliminate pests and pathogens, ensuring compliance with international shipping regulations). The drum has a steel reinforcement ring around the top and bottom to prevent deformation, and the inner spool is made of solid wood to support the weight of the cable. Wooden drums typically have a diameter of 600–1200 mm and can hold 500–2000 meters of cable (e.g., a 1000 mm diameter drum can hold 1500 meters of 25 mm² multi-core cable). The cable is wrapped in a moisture-resistant kraft paper before winding onto the drum, and the drum is covered with a plastic sheet and secured with steel straps (25 mm wide, 1.5 mm thick) to prevent shifting during transit.

Steel Drums: For extreme conditions (e.g., long-distance sea shipping, harsh industrial storage environments), steel drums are used. These drums are made of mild steel (thickness: 1.5–2.0 mm) and are galvanized to resist corrosion. The inner surface is lined with a foam pad (5 mm thick) to cushion the cable and prevent abrasion, and the drum is equipped with a locking lid to ensure full protection against moisture and dust. Steel drums have a diameter of 800–1500 mm and can hold up to 3000 meters of large cables (e.g., 50 mm² armored cables). While more expensive than cardboard or wooden drums, steel drums offer the highest level of protection and are reusable, making them a cost-effective option for long-term or repeat orders.

Coil Packaging: Small lengths of cable (1–50 meters) are wound into compact coils (diameter: 150–300 mm) and wrapped in a heavy-duty polyethylene bag (0.2 mm thick) with a zip-lock closure. The bag is printed with cable specifications, safety instructions, and the manufacturer’s contact information. For added protection, the coil is placed inside a cardboard box (3-ply corrugated) with foam inserts to prevent damage during transit. This packaging is lightweight, easy to carry, and ideal for retail sales or direct-to-consumer orders.

Blister Packaging: For very small lengths (0.5–5 meters, such as for wire connectors or small appliance repairs), blister packaging is used. The cable is placed in a clear plastic blister (made of PET or PVC) with a cardboard backing. The blister is heat-sealed to the backing, ensuring the cable remains clean and protected. The cardboard backing is printed with product details, barcodes, and usage instructions, making it suitable for display in hardware stores or electronics retailers.

Branded Packaging: For corporate customers or distributors, packaging can be customized with the customer’s logo, brand colors, and marketing messages. This includes printed cardboard drums, branded polyethylene bags, and custom-printed cardboard boxes—helping customers promote their brand while ensuring product protection.

Weather-Resistant Packaging: For outdoor storage or shipping to humid regions, weather-resistant packaging is available. This includes adding an extra layer of waterproof plastic film to drums, using water-resistant adhesives for sealing, and including desiccant packets (50–100 g) inside the packaging to absorb moisture.

Eco-Friendly Packaging: In response to growing environmental concerns, many manufacturers offer eco-friendly packaging options. This includes using recycled cardboard for drums and boxes, biodegradable polyethylene films, and FSC-certified wood for wooden drums. Eco-friendly packaging is labeled with recycling instructions to encourage proper disposal.

Road Transportation: Road transport is the most common method for domestic and short-distance deliveries (≤500 km). Cables are transported in closed trucks equipped with temperature control (to maintain 5–30°C, preventing PVC insulation from softening in high temperatures or becoming brittle in cold) and shock-absorbing suspension systems. The truck bed is lined with rubber mats to prevent abrasion, and drums are secured with steel straps and wooden blocks to prevent rolling. For small quantity orders, courier services (e.g., DHL, FedEx) are used, with packages sorted into climate-controlled vans for delivery. Road transportation typically has a delivery time of 1–3 days for domestic orders, with real-time tracking available via the logistics provider’s app or website.

Rail Transportation: For medium-distance deliveries (500–1500 km) or large bulk orders (≥10,000 meters), rail transportation is preferred due to its lower cost and higher capacity. Cables are loaded into covered rail containers (20 ft or 40 ft) with wooden pallets to distribute weight evenly. The containers are secured to the railcars with locking mechanisms to prevent movement during transit, and the interior is ventilated to avoid moisture buildup. Rail transportation has a delivery time of 3–7 days and is particularly suitable for delivering to industrial zones or remote areas with limited road access.

Sea Transportation: For international deliveries, sea transport is the most cost-effective option. Cables are packed into ISO-certified shipping containers (20 ft for small orders, 40 ft for large bulk orders) with wooden or steel drums. The containers are loaded onto cargo ships, with drums stacked no more than 3 layers high to avoid crushing the lower layers. To protect against saltwater moisture (a common issue in sea transport), the container is lined with a waterproof membrane, and desiccant bags (500 g each) are placed every 10 cubic meters. Sea transportation has a longer delivery time (15–45 days, depending on the destination—e.g., 15 days to Europe, 30 days to North America, 45 days to Australia) but is ideal for large orders that do not require urgent delivery.

Air Transportation: For urgent orders (e.g., emergency repairs, last-minute project requirements), air transportation is used. Cables are packaged in lightweight coil packaging or small cardboard drums to meet airline weight restrictions (typically ≤50 kg per package). Air cargo is transported in temperature-controlled holds to protect the PVC insulation, and delivery times range from 2–5 days globally. While air transport is significantly more expensive than other methods (up to 5 times the cost of sea transport), it ensures that customers receive their orders quickly to avoid project delays.

Loading/Unloading Procedures: Drums are lifted using forklifts with drum clamps (not hooks, which can puncture the drum or damage the cable inside). For small coils, manual handling is allowed only if the weight is ≤25 kg—heavier coils require the use of a pallet jack or crane. During loading, drums are placed in the center of the transport vehicle to avoid shifting, and gaps between drums are filled with foam padding to prevent collision.

Temperature Control: Cables are not transported in temperatures below -20°C or above 40°C. In cold weather, trucks and containers are preheated before loading to prevent the PVC insulation from becoming brittle; in hot weather, cooling systems are used to avoid insulation softening. For air transport, the cargo hold temperature is maintained at 15–25°C.

Moisture Protection: During loading/unloading in rainy or humid weather, cables are covered with waterproof tarpaulins. Drums are inspected for damage (e.g., cracks, holes) before loading—any damaged drums are repackaged to prevent moisture ingress.

Real-Time Tracking: Once the shipment departs, customers receive a unique tracking number via email or SMS. This number can be used to monitor the shipment’s location, status (e.g., “In Transit,” “Customs Clearance,” “Out for Delivery”), and estimated arrival time (ETA) on the manufacturer’s website or the logistics provider’s platform. For international shipments, tracking includes updates on port arrivals and customs processing—critical for customers who need to plan on-site installation schedules.

Documentation Package: Each shipment includes a complete set of documents tailored to the destination:

Order details (cable size, quantity, insulation type, packaging preference).

Production lead time (typically 3–7 working days for Standard Cables, 10–14 working days for customized cables like FRLS PVC or armored variants).

Payment status (e.g., “50% deposit received, balance due before shipment”).

A dedicated account manager’s contact information for any queries.

Quantity Verification: The team counts the number of drums/coils and verifies that the total length matches the order (e.g., a 1000-meter order of 4 mm² cable is checked to ensure it is wound into two 500-meter coils).

Packaging Check: The team inspects packaging for damage (e.g., torn PE bags, dented drum lids) and ensures all labels are correct and legible.

Sample Testing: A random sample (1–2 meters per cable size) is taken from the shipment and tested for insulation resistance and continuity. If the sample fails any test, the entire shipment is held for re-inspection, and the customer is notified of the delay with a revised ETA.

Check that the number of packages matches the packing list.

Inspect packaging for damage (e.g., broken drum flanges, wet boxes).

If packaging is damaged, open the package and check the cable for insulation cracks or conductor exposure.

Request Submission: Customers can request samples via the manufacturer’s website (using an online form), email, or phone. The form requires basic information: cable specifications (size, insulation type, stranding class), quantity of samples (minimum 1 meter per size, maximum 5 meters per size), delivery address, and application details (e.g., “residential lighting circuit,” “industrial machinery power supply”).

Quotation and Payment: The sales team reviews the request and sends a sample quotation within 48 hours. For standard cables, samples are often provided free of charge—customers only pay for shipping (typically \(10–\)50 for domestic delivery, \(50–\)150 for international delivery). For customized cables (e.g., heat-resistant PVC), a small fee (typically \(20–\)100) is charged to cover material costs. Payment can be made via credit card, bank transfer, or PayPal.

Production and Dispatch: Once payment is received, samples are produced within 2–3 working days (using the same materials and processes as bulk orders to ensure consistency). Samples are packaged in small PE bags with a sample label (including batch number and test results) and dispatched via express courier.

Sample Test Report: Details the results of tests conducted on the sample (insulation resistance, continuity, flame retardancy). For example, a 2.5 mm² FRLS PVC cable sample report may show “insulation resistance: 250 MΩ at 20°C,” “flame self-extinguishing time: 15 seconds,” and “smoke light transmittance: 75%.”

Product Brochure: Includes technical specifications, application guidelines, and compliance with international standards (e.g., “complies with IEC 60227-6 for PVC-Insulated Cables”).

Installation Guide: Provides step-by-step instructions for cutting, stripping, and terminating the cable—helpful for electricians testing the cable’s ease of installation.