Production of bismuth oxychloride

Bismuth oxychloride is a hydrolysis product of antimony trichloride, which is mainly used in the plastics industry to make plastic products have a beautiful jewel. The dosage is generally bismuth oxychloride: the resin is 0.4% to 0.8

Black tungsten concentrate

1. Overview Tungsten is a rare element with a content of only 0.007% in the earth's crust. China's tungsten reserves account for about 55% of the world's total reserves, ranking first. There are output in North China, Northwest China and Southwest Chi