Shaanxi Kaida Chemical Co., Ltd. specializes in the development and production of precious metal catalysts. With large-scale and mature preparation technology, we provide key precious metal catalysts for a number of domestic professional manufacturers of PEM fuel cells and electrolytic water hydrogen production. The precious metal catalyst with high activity, high stability and long life was produced by means of carrier screening, changing the structure and performance of the carrier, the dispersion of the active metal and the improvement of the preparation conditions. At present, due to the stirct conditions required by the preparation of anode catalyst for hygroden production through PEM electrolysis, usually only Ir series catalysts are used in this process, and selected Pt series catalysts are mianly used as cathode analysts; For PEM fuel cells, the anode and cathode catalysts can be selected Pt series catalysts. Through more than 20 years of systematic research, Kaida has deeply understood the influence of pH value, dosage of protective agent, reduction conditions and other factors on the performance of nano-IR and Pt series catalysts in the catalyst preparation system, and has realized the ability of large-scale production of PEM fuel cells and electrolytic water to produce hydrogen negative and anode precious metal catalysts through relevant measures.