Shaanxi Kaida Chemical Co., Ltd. specializes in the development and production of precious metal catalysts and provides 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, the anode and cathode catalysts of PEM fuel cells are Pt series catalysts or ruthenium catalysts. Through more than 20 years of systematic research, Kaida has deeply understood the impact of pH value, dosage of protective agent, reduction conditions and other factors on the performance of nano-metal 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.