Manufacturing, R & D and sales of polymer materials, communication optical cables, power cable sheath protection materials, locomotive cables, marine cables, solar cables, offshore oil platform cables and insulating materials, low smoke halogen-free sheath materials, automobile wires, power control cables, special optical cable halogen-free sheath materials; Self support and agency of import and export business of all kinds of goods and technologies except for the goods and technologies restricted and prohibited by the state. Projects that need to be approved according to law can be operated only after being approved by relevant departments.