Watch strap shaped copper is oxidized into black is because of the surface reaction of copper and oxygen in the air to form, do not want to be oxidized, the mai..
In our daily life, specific copper products has been widely applied in all aspects, greatly improve the quality of our life. In the prevention of bacteria, ther..
Casting and manufacturing technology of valve shaped copper production is mainly divided into 2 types, one is a foundry casting, hot forging forging. Now, it is..
Copper profiles in workpiece polishing is completed on the surface of the work to be smooth, shiny, commonly used polishing method with mechanical polishing, ch..
