Conductor Material: The conductors of both cables are made of high - quality aluminum materials. Aluminum, as a conductor, has the advantage of light weight, which makes the cable more convenient in transportation and laying, and can reduce construction difficulty and cost. At the same time, the aluminum conductor treated by special processes has good conductivity. Although its conductivity is slightly lower than that of copper, it has obvious advantages in cost and can save expenses for users on the premise of meeting general power transmission needs. In addition, this kind of aluminum conductor also has certain oxidation resistance, which can reduce the decline in conductivity caused by oxidation during use.

Insulation Material: The insulation layer is made of XLPE (cross - linked polyethylene). XLPE is a polyethylene material that has undergone cross - linking treatment. Compared with ordinary polyethylene, its heat resistance is significantly improved, and it can be used for a long time at higher temperatures without performance degradation. It has high insulation strength, can withstand higher voltages, and effectively prevent insulation breakdown. Moreover, XLPE has strong chemical stability, is not easy to be eroded by chemical substances, and has good aging resistance, which prolongs the service life of the cable.

Sheath material: It is speculated that the Yjlv model uses a polyvinyl chloride (PVC) sheath. The PVC Sheath has good mechanical strength, which can effectively protect the internal structure of the cable and resist external forces such as extrusion and collision. It also has certain flame - retardant performance, which can delay combustion when encountering an open flame and improve the safety of use. It is speculated that the Yjly model uses a polyethylene (PE) sheath. The PE sheath has good flexibility and excellent cold resistance, is not easy to crack in low - temperature environments, and has good water resistance, which can prevent moisture from penetrating into the cable.

Style design: Both cables have an overall circular structure, which has low resistance during laying and is more convenient for both pipe laying and direct burial laying. The appearance color of the cable is usually dark colors such as black or gray, which helps to reduce heat absorption from direct sunlight and lower the temperature of the cable during operation. On the surface of the cable, there are clearly printed marks such as specification model, rated voltage and manufacturer, which is convenient for users to identify and trace product information.

Conductor manufacturing: For the manufacturing of aluminum conductors, first, the raw material aluminum is smelted and purified to remove impurities to ensure the conductivity of the conductor. Then, the aluminum billet is processed into an aluminum rod with the required diameter through a continuous extrusion process, and then further drawn into Aluminum Wires that meet the AWG specification through a wire drawing process. For conductors composed of multiple Aluminum Wires, stranding treatment is also required. During the stranding process, parameters such as stranding pitch are strictly controlled to ensure the structural stability and conductive uniformity of the conductor.

Insulation extrusion: The XLPE insulation layer is wrapped around the outer layer of the conductor by extrusion molding process. First, the XLPE material is heated to a molten state, and then the molten material is evenly coated on the surface of the conductor through an extruder. During the extrusion process, parameters such as extrusion temperature and speed are accurately controlled to ensure that the insulation layer has uniform thickness, a smooth surface, and no defects such as bubbles and impurities. After extrusion, the insulation layer is cross - linked, usually by irradiation cross - linking or chemical cross - linking, so that the XLPE molecules form a three - dimensional network structure, thus obtaining excellent performance.

Cabling process: Multiple conductors wrapped with insulation layers are cabled according to the designed structure. During cabling, an appropriate stranding method and pitch are adopted to ensure that each conductor is neatly arranged and evenly stressed inside the cable. During the cabling process, some filling materials may be filled to ensure the roundness and stability of the cable and prevent the conductor from moving during use.

Sheath extrusion: After cabling, the sheath is extruded on the outer layer. According to different models, PVC or PE materials are selected respectively, and the sheath material is evenly coated on the outer layer of the cabled core through an extruder. It is also necessary to strictly control the extrusion process parameters to ensure that the sheath has uniform thickness, is closely combined with the cable core, and has no problems such as looseness and wrinkles. After the sheath extrusion is completed, cooling and shaping treatment will be carried out to make the sheath solidify and form quickly.

Testing process: Strict testing is carried out during production and after the finished product. It includes conductor resistance test to ensure that the conductor conductivity meets the standard; insulation resistance test and withstand voltage test to check the insulation performance of the insulation layer; mechanical performance tests of the sheath, such as tensile strength and elongation at break, to ensure that the sheath quality meets the standard. In addition, the overall structure and appearance of the cable will also be inspected, and only products that pass all testing items can leave the factory.

Transportation mode: Different transportation modes can be selected according to the transportation distance, cable quantity and customer needs. Truck transportation is generally used for short - distance transportation. Truck transportation has high flexibility and can directly deliver the cable to the designated place. For long - distance transportation, railway transportation or road freight 专线 can be chosen. Railway transportation has good stability and is suitable for large - batch cargo transportation; road freight 专线 can provide door - to - door service, which is more convenient. For export products, sea freight or air freight will be used. Sea freight has low cost and is suitable for large - quantity cargo transportation; air freight is fast and suitable for urgent orders.

Transportation precautions: When loading the cable, ensure that the cable reel is placed stably to avoid tilting and inversion. Cables of different specifications should be loaded separately to avoid mutual extrusion. During transportation, prevent the cable from being subjected to severe bumps, collisions and extrusion. The driver should drive steadily and avoid sudden braking, sharp turns and other operations. The cable should be protected from direct sunlight and rain. If the transport vehicle is an open - top vehicle, a tarpaulin should be covered for protection. At the same time, keep away from fire sources, heat sources and corrosive substances to prevent damage to the cable.

Transportation tracking: For each batch of cable transportation, a special person will be arranged for tracking. Through the logistics information system, the transportation position and transportation status of the goods can be known in real time. In case of transportation delays, abnormalities and other situations, communication and coordination with the logistics company will be carried out in a timely manner to ensure that the goods can be delivered to customers on time and safely, and the relevant information will be fed back to customers in a timely manner.

Delivery process: After receiving the customer's order, the salesperson will confirm the order information, including product specification model, quantity, delivery address, delivery time, etc. After confirmation, the order information is transmitted to the warehouse. Warehouse personnel prepare goods according to the order information, check the goods to ensure that the product specifications and quantity are accurate. Then, the goods are packaged, and after packaging, the logistics department is notified to arrange transportation. The logistics department selects the appropriate transportation mode and logistics company according to the delivery information and goes through relevant transportation procedures. After delivery, the delivery order number, logistics company information, etc. are promptly notified to the customer to facilitate the customer to check the transportation status of the goods.

Delivery time: When the inventory is sufficient, for cables of conventional specifications, delivery is generally completed within 1 - 3 working days after receiving the order. If the customer orders special specifications or customized products, the delivery time will be determined according to the production cycle. Usually, the delivery time will be communicated with the customer in advance, and the goods will be delivered on time within the agreed time. In case of delivery delay caused by force majeure, the customer will be notified as soon as possible with reasons, and solutions will be negotiated.

Delivery documents: A series of documents will be provided with the goods when delivering, including product certificate, inspection report, packing list, invoice, etc. The product certificate and inspection report prove that the product quality meets relevant standards; the packing list details the specifications and quantity of the goods, which is convenient for the customer to check when receiving the goods; the invoice serves as the basis for the customer's payment and financial accounting. These documents will be properly packaged and sent together with the goods.

Sample provision: To help customers understand the quality and performance of the products, the company provides sample services. Customers can apply for samples from salespersons through phone calls, emails, online platforms, etc., indicating the required specification and model of the samples. After receiving the application, the salesperson will confirm within 1 - 2 working days and arrange for sample preparation. The sample is generally a 1 - 2 - meter - long cable, which can meet the customer's preliminary inspection needs for product appearance, specification, material, etc.

Sample cost: The samples themselves are provided free of charge, but the transportation cost of the samples is borne by the customer. Customers can choose to pay the freight by cash on delivery or pay the freight to the company in advance. For large customers with clear purchase intentions or long - term cooperative customers, they can apply for a reduction or exemption of the sample transportation cost. The specific situation can be negotiated with the salesperson.

Sample feedback: After receiving the samples, if customers have any questions or need further information, they can contact the salesperson at any time. The company encourages customers to provide feedback on sample use, including evaluations and suggestions on sample performance and quality. Relevant departments will carefully analyze and handle customers' feedback to continuously improve products and services. If the customer is satisfied with the sample and confirms the purchase intention, the salesperson will follow up in a timely manner to provide the customer with subsequent purchase plans and services.

Quality assurance: The company provides quality assurance for these two aluminum cables, and the product warranty period is 12 months from the date the customer receives the goods. During the warranty period, if the product cannot be used normally due to its own quality problems (such as insulation layer cracking, conductor breaking and other damages not caused by human factors), the customer can apply for after - sales treatment to the company with the purchase certificate and product certificate.

After - sales consultation: If customers encounter any problems during product use, such as installation guidance and performance consultation, they can consult through various channels such as online customer service on the company's official website, after - sales service phone calls and emails. After - sales service personnel will respond to customers' consultations within 24 hours and provide professional and detailed answers and suggestions.

Fault handling: If the product fails, customers can report the fault to the after - sales service department. After - sales service personnel will first understand the fault situation and make a preliminary judgment through phone calls or online communication. For simple faults, guide customers to handle them by themselves; for complex faults or those requiring on - site maintenance, the company will arrange professional and technical personnel to arrive at the site for inspection and maintenance within the agreed time.

Return and exchange service: If the received product has problems such as wrong specification and model or appearance damage, and it is not caused by the customer themselves, the customer can apply for return or exchange within 7 days after receiving the goods. Customers need to provide relevant photos and other evidence. After verification by the company, the return or exchange will be arranged. The transportation cost incurred during the return or exchange process shall be borne by the company.

Regular return visits: The company will conduct regular return visits to customers who have purchased products. The return visit methods include telephone return visits and questionnaires. The return visit content mainly includes product use status, customer satisfaction, and whether there are new needs, etc. Through return visits, we can timely understand customers' use experience and problems, provide continuous service support for customers, and collect customers' opinions and suggestions to improve products and services.