Useful Resources for Metal Casting & Metal Melting
Induction heating is the most ideal technology for prec […]
Gold Refinery Machine. Gold has a certain purity. Purification is to further purify gold ornaments or nuggets. The higher the purity, the higher the market value. the following two methods are usually used to refine gold: Aqua Regia and gold electrolysis. We will introduce these two technologies to you.