Yun Tai Shan S101 medium temperature vanadium catalyst for the production of sulfuric acid is a new type of vanadium catalyst developed by our company. It boasts the features of reliable performance, stable quality, wide applicability, wide using temperature, high changing rate, etc. Its carrier is the quality diatomite gained from new ores, which enables the product possesses the features of low bulk density, high activity, high strength and long life, etc. In laboratory, the testing result complies with the standard issued by the Ministry.