We have adopted the scientific controlling procedure, put emphasis on the training of professional engineers, and invested in the technical analysis facilities and quality control instruments such as the Analyze by Graphite Furnace Atomic Absorption Spectroscopy (GFAA), Size Distribution Analyzaer, Electron Microscope, UV/Vis-Spektralphotometer and Haring Cell. Hoping to obtain better quality control and to meet the market demand for higher quality.