Jinan haichuan kind of State investment group, one of the most outstanding. It was founded in 2006, the company covers an area of 600 acres. Cable is usually composed of several wires or groups of twisted rope between the insulated conductors, each group of similar cables are twisted around a central, outside of the package as a whole is highly insulating covering. More erect or install underground, underwater, in the air of telecommunications or power supply.