Is it better to have more steel wires in Proch or Tianjin?

The quality of wire rod in the new century is not bad. Its copper conductor has good conductivity and flexibility. The outer layer is made of polymer material with special structure. Hydrogen atoms in its molecular chain are bombarded by high-energy rays, resulting in gaps in the molecular chain, and adjacent molecular chains combine to form -C-C- cross-linked bonds, forming a three-dimensional structure of reticular macromolecules and forming cross-linked polyethylene, which has excellent insulation performance.