1. What types of commonly used wires and cables are classified according to their uses?
Answer: According to use, it can be divided into bare wires, insulated wires, heat-resistant wires, shielded wires, power cables, control cables, communication cables, radio frequency cables, etc.

2. What types of insulated wires are there?
Answer: Commonly used insulated wires include the following: PVC insulated wires, PVC insulated flexible wires, nitrile-PVC mixture insulated flexible wires, rubber insulated wires, agricultural underground directly buried aluminum core plastic insulated wires, rubber insulated cotton yarn Textile cords, PVC insulated nylon sheathed wires, PVC insulated cords for power and lighting, etc.

3. What is the function of the inner sheath of the cable?