Conductor Material: The conductors of this series of cables are all made of high - purity electrolytic copper. This material has excellent electrical conductivity, high conductivity, and can effectively reduce losses during power transmission. At the same time, high - purity electrolytic copper has good ductility and mechanical strength, which is easy to process into the required conductor shape, and is not easy to break during laying and use.

Insulation Material: Different models of cables have different insulation materials. Avvg, Eayy and other models use cross - linked polyethylene as insulation material, which has good insulation performance, high temperature resistance level, strong chemical stability and is not easy to age. The Nayy model uses polyvinyl chloride insulation, which has good insulation and certain corrosion resistance, and the cost is relatively low. The 1 - Ayky model uses ethylene - propylene rubber insulation, which has excellent weather resistance, ozone resistance and Chemical Resistance.

Sheath material: As the outer protection of the cable, the choice of sheath material is crucial. Acyy, Acyy - F and other models use polyvinyl chloride sheaths, which have good mechanical strength, corrosion resistance and wear resistance. Some models such as Avvg use polyethylene sheaths, which have good Flexibility and excellent low - temperature resistance. Some other models use neoprene sheaths, which have good weather resistance and tear resistance.

Style design: The cable has an overall circular structure, which is convenient for laying and installation and can reduce resistance during laying. The surface of the outer sheath is smooth, which not only can reduce dust adhesion, but also is easier to keep clean when washed by rainwater. Some models are printed with clear specifications, models, manufacturers and other marks on the sheath, which is convenient for users to identify and trace.

Conductor manufacturing: High - purity electrolytic copper is processed into Copper Wires of the required diameter by wire drawing process, and then multiple copper wires are twisted together by bunching process to form a conductor. The bunching process can improve the flexibility and mechanical strength of the conductor, and at the same time ensure the uniform conductivity of the conductor.

Insulation extrusion: The extrusion molding process is used to wrap the insulation material on the outer layer of the conductor. Through precision extrusion equipment, the molten insulation material is evenly coated on the surface of the conductor to form a continuous and smooth insulation layer. During the extrusion process, parameters such as temperature and pressure are strictly controlled to ensure that the insulation layer has uniform thickness, no bubbles and no impurities.

Cabling process: 4 conductors covered with insulation layer are cabled according to a certain twisting direction and pitch. The untwisting process is used during cabling to reduce the twisting stress of the cable during laying and use, and ensure the structural stability of the cable.

Sheath extrusion: After cabling, the extrusion process is used again to wrap the sheath material on the outer layer. The sheath extrusion also strictly controls the process parameters to ensure that the sheath is closely combined with the internal structure without loosening or cracking. For models with special requirements, such as Acyy - F, fire - retardant additives are added during the sheath extrusion process to improve its fire - resistant performance.

Testing process: There are strict testing links during production and after the finished product. Including conductor resistance test to ensure that the conductivity meets the standard; insulation resistance test to ensure good insulation performance; withstand voltage test to check the insulation stability of the cable under high voltage; mechanical performance tests, such as tensile strength and elongation at break, to ensure that the cable has sufficient mechanical strength.

Packaging materials: Cables are usually wound on wooden or steel cable reels. The cable reels have sufficient strength to bear the weight of the cable and the impact force during transportation. The outer layer of the cable is wrapped with plastic film to prevent dust and moisture from entering. For cables with longer lengths, binding belts are used to fix them during winding to avoid loosening of the cables.

Packaging marks: Each cable reel has clear marks, including product specifications and models, length, weight, production batch number, production date, manufacturer name and contact information. These marks are convenient for users to check product information and are also conducive to product traceability.

Packaging requirements: During the packaging process, it is necessary to ensure that the cable is not squeezed, twisted or worn. Cables of different specifications and models shall be packaged separately to avoid confusion. At the same time, the packaging shall meet the relevant standards for transportation and storage to ensure that the quality of the cable is not affected under normal transportation and storage conditions.

Transportation mode: According to the quantity, length and transportation distance of the cables, road transportation, railway transportation or water transportation can be selected. Trucks are generally used for short - distance transportation; railway freight can be chosen for long - distance transportation with a large quantity; for areas with ports, water transportation is also an economic choice.

Transportation precautions: During transportation, the cable reels must be fixed firmly to prevent rolling and collision during the driving of the transport vehicle. The cable reels must not be inverted to avoid the cables slipping off the reels. The transport vehicle shall drive smoothly, avoiding sudden braking, sharp turning and other operations to reduce the impact on the cables. During transportation, the cables shall be protected from direct sunlight, rain and snow. If necessary, a tarpaulin can be covered.

Transportation tracking: For important transportation orders, transportation tracking can be carried out. Through GPS positioning and other methods, the transportation position and status of the goods can be known in real time, and problems that may occur during transportation can be handled in a timely manner.

Delivery process: After receiving the customer's order, first conduct order review to confirm product specifications and models, quantity, delivery date and other information. Then retrieve the corresponding products from the warehouse, conduct outgoing inspection, and check product information and quality status. After passing the inspection, arrange packaging and transportation. Before delivery, notify the customer of the delivery information, including transportation mode, estimated arrival time, transport vehicle information, etc.

Delivery time: When the inventory is sufficient, delivery is generally completed within 1 - 3 working days after receiving the order. For customized products or insufficient inventory, we will communicate with customers in advance, clarify the delivery time, and deliver the goods according to the agreed time.

Delivery documents: Provide detailed delivery documents when delivering goods, including delivery orders, packing lists, invoices, etc. These documents serve as the basis for customers to receive goods and settle accounts, ensuring the smooth progress of transactions.

Sample provision: To facilitate customers to understand product quality and performance, the company can provide samples. Customers can choose the required specifications and models according to their own needs. The company will generally send out the samples within 3 - 5 working days after receiving the sample application. The number of samples is usually 1 piece, and the length depends on the specifications and models, generally 1 - 5 meters.

Sample cost: The samples themselves are free, but the transportation cost of the samples is borne by the customer. For large customers with clear purchase intentions, the sample transportation cost can be negotiated and reduced.

Sample feedback: After receiving the samples, if customers have any questions or feedback, the company will arrange professionals to answer and handle them. According to the customer's feedback, the products can be further optimized or more suitable product recommendations can be provided to customers.

Quality assurance: The company provides quality assurance for this series of cables. Under normal use conditions, the product warranty period is 1 year. During the warranty period, if the damage is caused by the product's own quality problems, the company will provide free repair or replacement services.

After - sales consultation: Customers can consult through phone, email, online customer service and other methods when encountering any problems during use. The company arranges professional after - sales personnel to respond to customer consultations within 24 hours and provide professional answers and guidance.

Fault handling: If the product fails, customers can report the fault to the company's after - sales department. After - sales personnel will first understand the fault situation and make a preliminary judgment. For simple faults, guide customers to handle them by phone or online; for complex faults, the company will arrange technical personnel to go to the site for maintenance.

Return and exchange service: If return or exchange is needed due to wrong product specifications and models, quality problems, etc., customers can apply within 7 days after receiving the goods. After verifying the situation, the company will handle the return and exchange procedures in accordance with relevant regulations to ensure the legitimate rights and interests of customers.

Regular return visits: The company will conduct regular return visits to customers who have purchased products to understand the use of products and customer needs. Through return visits, problems can be found and solved in a timely manner, and customers' opinions and suggestions can be collected to continuously improve product and service quality.