Midtown Lunch

With the constant development of economy in our country, sand washer machine the infrastructure construction develops fast. The coverage rate of network and network communication is rising. The conductivity of copper is well, which is only worse than silver’s conductivity. But silver is too rare and it is often used as jewelry or experimental materials. Thus copper becomes the excellent material for manufacturing cables. Besides, copper is applied a lot to motors and generators. Recently, the demand of copper is rising. Therefore, What we should focus on is how to take full advantage of copper resource.