... use import semiconductor as laser to realize larger power,longer lifetime and better chromaticity;large-sized photodetector ... quartz, diatomite, feldspar, calamite,clay, garnet, vermiculite, Titanium white power, etc. Metallic powder such as aluminum powder, iron powder, ... powder, copper powder, zinc powder, other rare metal power and varied alloy powder, etc. Pharmaceutical, agricultural pesticide, ...