Conductor Material: The conductor of the cable is made of pure copper. Pure copper has extremely high conductivity and is an ideal conductive material, which can minimize losses during power transmission and ensure the efficiency of power transmission. At the same time, pure copper has good ductility and Flexibility, which is convenient for processing into various specifications of wires, and can better adapt to operations such as bending during laying. In addition, pure copper has good chemical stability, is not easy to be corroded, and can prolong the service life of the cable.

Insulation layer material: The insulation layer is made of cross-linked polyethylene (XLPE). XLPE has excellent electrical insulation performance, which can effectively isolate current, prevent leakage, and ensure electrical safety. It has excellent temperature resistance and can maintain stable performance in the temperature range of -40℃ to 90℃. Even in high-temperature environments, it is not easy to age and can maintain good insulation effect for a long time. Moreover, XLPE has high mechanical strength, good impact resistance and wear resistance, which can protect the conductor from external damage.

Sheath material: The outer sheath is made of polyvinyl chloride (PVC). PVC has good moisture resistance, which can prevent moisture from entering the cable and avoid oxidation of the conductor due to moisture. Its corrosion resistance is also outstanding, which can resist the erosion of corrosive substances in the soil, chemical gases in the air, etc. on the cable. At the same time, the PVC Sheath has strong wear resistance, which can resist damage caused by friction during laying and use, and protect the internal structure of the cable. In addition, PVC materials have relatively low cost and are easy to process, which helps to control the production cost of the cable.

SWA armouring layer material: The SWA (steel wire armoured) layer is usually made of high-strength steel wire braided. Steel wire has extremely high mechanical strength, which can provide strong protection for the cable, enabling it to resist external mechanical forces such as impact, extrusion and stretching, and greatly improving the damage resistance of the cable. The steel armouring layer can also play a certain shielding role, reducing the impact of external electromagnetic interference on the transmission performance of the cable.

Style: The cable has an overall circular structure. This style is convenient for realizing uniform wrapping of the insulation layer, armouring layer and sheath during production, ensuring stable performance of the cable. The circular structure also makes it easier for the cable to pass through pipes and cable trays during laying, reducing laying resistance. The color of the cable is usually black, with a smooth surface and clear marks, indicating the model, specification, number of cores, rated voltage and other information of the cable, which is convenient for users to identify and select.

Conductor production: First, the pure copper raw material is smelted to remove impurities, obtaining copper liquid with high purity. Then, the copper liquid is made into copper rods through continuous casting process, and the diameter of the copper rods is adjusted according to the specifications of the Cable Conductor. Next, wire drawing equipment is used to draw the copper rods into Copper Wires of the required diameter. During the wire drawing process, it is necessary to strictly control the drawing speed and tension to ensure the dimensional accuracy and mechanical properties of the copper wires. The drawn copper wires also need to be annealed. Through heating and cooling processes, the internal stress of the copper wires is eliminated, and their flexibility and conductivity are improved. Finally, according to the core number requirements of the cable, multiple copper wires are stranded together to form a conductor with the required cross-section.

Insulation extrusion: The produced conductor is sent to the extruder, and a uniform layer of cross-linked polyethylene (XLPE) insulation is extruded on the surface of the conductor. During the extrusion process, it is necessary to accurately control the extrusion temperature, speed and pressure to ensure that the insulation layer has uniform thickness, smooth surface, and is closely combined with the conductor. The extruded Insulated Wire core needs to be cross-linked, usually by means of high-temperature and high-pressure steam cross-linking, so that the XLPE molecules form a three-dimensional network structure, thereby improving its mechanical strength, temperature resistance and insulation performance.

Cabling: According to the number of cores of the cable, multiple insulated wire cores are stranded together to form a cable core. During the cabling process, it is necessary to add filling materials such as polypropylene rope in the middle of the cable core to ensure the roundness and stability of the cable core. The filling material can also play a buffering role, reducing friction and extrusion between the wire cores. When stranding, the stranding pitch should be well controlled to ensure the stability of the cable core structure and avoid loosening during subsequent processing and use.

SWA armouring: SWA armouring is performed on the outside of the cabled core. High-strength steel wires are braided on the surface of the cable core at a certain angle and density through armouring equipment to form a steel armouring layer. During the braiding process, it is necessary to ensure uniform tension of the steel wires and that the braiding density meets the requirements to ensure the mechanical strength and shielding effect of the armouring layer. A separation layer, such as non-woven fabric, is usually added between the armouring layer and the cable core to prevent the armouring layer from damaging the insulation layer.

Sheath extrusion: A polyvinyl chloride (PVC) sheath is extruded outside the armouring layer. The armoured cable core is sent to the sheath extruder, and the PVC material is evenly coated on the surface of the armouring layer through the extrusion die. During the extrusion process, the temperature, speed and pressure also need to be controlled to ensure that the sheath layer has uniform thickness, flat surface, and is closely combined with the armouring layer. The thickness of the sheath layer must comply with relevant standards to ensure that it can provide effective protection for the cable.

Quality inspection: Strict quality inspection is required in all links of the production process. The diameter, resistance, tensile strength, etc. of the conductor are tested to ensure that they meet the specification requirements. The insulation layer is tested for thickness, insulation resistance, voltage resistance performance, etc. to ensure its insulation effect. After cabling, the roundness and stranding quality of the cable core are checked. The armouring layer is tested for braiding density, steel wire strength, etc. The sheath layer is tested for thickness, tensile strength, impact resistance, etc. Finally, sampling tests are carried out on the finished cable, including partial discharge test, aging test, bending test, flame retardant test, etc., to ensure that all performance indicators of the cable meet relevant standards and design requirements.

Packaging materials: The cable is usually packaged with wooden reels or iron reels. The wooden reels are made of high-quality hardwood, such as pine and fir. These woods are hard, with high strength and toughness, and can bear the weight of the cable and the impact force during transportation. The wooden reels are subjected to anti-corrosion treatment, such as coating with anti-corrosion paint or impregnation, to prevent the wood from getting damp and decaying, and prolong its service life. The iron reels are welded with high-strength steel, which has higher bearing capacity and deformation resistance, and is suitable for packaging long-length and heavy-weight cables. The surface of the iron reels is galvanized to improve their corrosion resistance and prevent rusting.

Packaging method: The cable is neatly wound on a wooden reel or iron reel. When winding, the tension should be controlled to make the cable arrange closely, avoiding looseness and mutual friction. The two ends of the cable are wrapped with plastic film to prevent the ends from getting damp, polluted and damaged. On the side of the wooden reel or iron reel, the model, specification, number of cores, length, weight, manufacturer, production date, implementation standard and other information of the cable are marked with eye-catching words and symbols, which is convenient for users to identify and accept. For exported products, corresponding international certification marks and English descriptions are also marked.

Packaging requirements: The packaging must be firm and reliable, able to withstand various external forces during transportation and loading and unloading, and ensure that the cable does not loosen, wear, deform or otherwise damage during transportation and storage. The size of the packaging should match the length and weight of the cable, and at the same time meet the loading requirements of the means of transport, facilitating loading, unloading and transportation. In addition, the packaging should have certain moisture-proof and dust-proof properties, and a plastic film can be covered on the outside of the wooden reel or iron reel to further protect the cable from the external environment.

Transportation methods: According to the transportation distance, the number of cables and customer needs, different transportation methods can be selected. Road transportation has high flexibility, is suitable for short-distance transportation and door-to-door service, and can quickly deliver the cable to the destination, which is more suitable for small batches and urgent needs of goods. Railway transportation has large capacity, low cost and good stability, and is suitable for medium and long-distance, large-volume cable transportation, which can effectively reduce transportation costs. Water transportation is suitable for long-distance transportation and exported goods, especially for customers in coastal areas. Water transportation has low cost, but the transportation time is relatively long.

Transportation precautions: During transportation, the cable reel must be placed horizontally, and it is strictly forbidden to invert or tilt to prevent the cable from sliding off the reel and causing damage. When loading and unloading the cable, special hoisting equipment such as cranes and forklifts should be used, and the hoisting point should be located at the axis of the cable reel to avoid deformation of the cable reel or damage to the cable due to improper hoisting. During transportation, the cable should be avoided from severe impact, vibration and extrusion. The vehicle should run smoothly and try to avoid bumpy roads. At the same time, it is necessary to take moisture-proof, sun-proof and anti-corrosion measures, such as covering the cable reel with a rain cloth to avoid rain, direct sunlight and contact with corrosive substances. During transportation in winter, attention should be paid to preventing the cable from freezing to avoid the impact of low temperature on the performance of the cable.

Transportation time: The transportation time depends on the transportation method and distance. Road transportation can generally arrive within 1-5 days, and the specific time depends on the transportation distance and road conditions; railway transportation usually takes 3-10 days, which is affected by railway lines and scheduling; water transportation takes a longer time, with domestic transportation generally taking 7-15 days, and international transportation may take several weeks or even months depending on the route and port conditions.

Delivery process: After the customer places an order, the company's sales department will timely confirm the order information with the customer, including product model, specification, quantity, delivery date, delivery location, etc. Then the order information is transmitted to the production department or warehouse. The production department organizes production according to the order requirements, and the warehouse prepares goods according to the order. After the product is produced or taken out of the warehouse, the quality inspection department will conduct strict inspection on the product to ensure that the product quality meets the requirements. After passing the inspection, packaging and transportation are arranged, a suitable logistics company is selected, and a transportation contract is signed with the logistics company to clarify the rights and obligations of both parties. After shipment, the company will promptly notify the customer of the shipment information, including the name of the logistics company, waybill number, estimated arrival time, etc., to facilitate the customer to track the transportation status of the goods.

Delivery time: For products in stock, they will generally be shipped within 1-3 working days after the order is confirmed. For products that need to be produced, the delivery time depends on the production cycle, which is usually 7-15 working days. In case of special circumstances such as raw material shortage or equipment failure that may cause delivery delay, the company will communicate with the customer in a timely manner, explain the reasons and negotiate a solution to ensure that the customer's interests are not affected.

Sample provision: To enable customers to better understand the quality and performance of the product, the company can provide samples. Customers can make sample requests to the company by phone, email, online platform, etc., indicating the model, specification, number of cores and other information of the required samples. After receiving the sample request, the company will arrange the production of samples or retrieve them from the inventory within 1-3 working days and send them to the customer in a timely manner.

Sample cost: The cost of samples is usually borne by the customer, including the production cost, packaging cost and mailing cost of the samples. For long-term cooperative old customers or customers with large order intentions, the company can provide samples for free, and the sample cost will be deducted in subsequent orders. The specific sample cost can be negotiated with the company's sales staff.

Sample description: The provided samples have the same material, Structure and Performance as the mass-produced products, which can truly reflect the quality status of the products. The sample will be marked with the model, specification, number of cores, production batch and other information of the product, which is convenient for customers to test and inspect. After receiving the sample, customers can test the appearance, size, electrical performance, etc. of the sample, and can communicate and feedback with the company in a timely manner if any problems are found.

Quality assurance: The company promises that the quality guarantee period of this cable is 18 months from the date of shipment. Within the quality guarantee period, if the product fails or is damaged due to its own quality problems, the company will be responsible for free repair or replacement. If the product problem is caused by improper use, incorrect installation, man-made damage, etc. by the customer, the company will provide paid maintenance services and charge the corresponding material cost and working hour fee.

Technical support: The company has a professional technical team to provide customers with comprehensive technical support. Customers can turn to the technical team for help through phone, email, online consultation and other ways when encountering problems in product selection, installation, use, maintenance, etc. Technical personnel will reply within 24 hours and provide professional solutions and technical guidance. If necessary, technical personnel can also be arranged to guide on site.

After-sales service response: If customers find product quality problems or need after-sales service during use, they can contact the after-sales service department through the company's customer service hotline, email and other channels. After-sales service personnel will get in touch with the customer within 2 hours after receiving the feedback to understand the details of the problem and register it. For general problems, a solution will be given within 4 hours; for problems that need on-site handling, technical personnel will be arranged to arrive at the site for processing within 24-72 hours according to the distance from the customer's location.

Return and exchange policy: Within the quality guarantee period, if the product is confirmed to have quality problems after testing, the customer can put forward a return or exchange application. The customer needs to provide relevant materials such as purchase vouchers, product photos and test reports. The company will review within 3 working days after receiving the application. After approval, the company will arrange return or exchange and bear the relevant transportation costs. For returns and exchanges due to non-quality problems, such as incorrect model selection by the customer, the customer needs to bear the round-trip transportation costs of the product and a certain handling fee. The specific fee standard can be negotiated with the company.

Customer feedback: The company attaches great importance to customers' feedback and has set up a number of customer feedback channels, such as customer service hotline, email, online message board, etc. Customers can put forward opinions and suggestions on product quality, service attitude, delivery speed, etc. The company will arrange special personnel to sort out and analyze the customer feedback regularly, and formulate improvement measures for the existing problems to continuously improve product quality and service level and enhance customer satisfaction.