What brands of wires are there in Sichuan? Where is the wire rod manufacturer in Sichuan?

I just asked my uncle who works in China Railway. Their cable was acquired by a local manufacturer named Li Dian Cable, which is located in Tuanjie Town, Pixian County, Chengdu. You can refer to it In addition, this is what I collected about the precautions for wire purchase:

1. If the conductivity is good, you must choose copper core.

2. Strong load capacity, stable power consumption to the greatest extent, and avoiding fire.

3. Better waterproof performance. If the appearance of the wire is not well done, it is easy to cause casualties when it cracks in water.

4. If the main line is thick core, the performance will be relatively stable.

5. Did you cut corners on the length?