Fixer for recycling silver

Fixer for recycling silver

The method for recovering silver from the fixing solution includes a precipitation method, a displacement method, a hypochlorite method, a sodium borohydride method, a sodium dithionite meth

LED lighting is not good or will change

In recent years, the overall characteristics of the lighting industry has been the transformation from traditional lighting to LED lighting. Through these years of rapid development, LED lighting products have gradually replaced traditional lighting products, occupying an important position in