The catalyst is a kind of COS hydrolytic agent used at normal and low temperature with activated aluminium oxide as carrier, it can hydrolyze trace amount of COS, CS₂ and other organic sulfur in liquid propylene to H₂S, and it can be used with the zinc oxide desulfurization catalyst in series to reach the fine desulfurization effect. In addition, because the hydrolytic agent surface has very large chemical adsorption effect, it can also remove other organic sulfides and chloride, cyanide and other common poisons at the same time.

HT503 hydrolytic agent can be used with the normal-temperature zinc oxide desulfurizer in series to remove the total sulfur in propylene raw material to below 0.1ppm. The product has been used for the fine desulfurization of the raw material propylene in domestic butanol and octanol and various of large, medium and small-sized polypropylene plants since the end of 1980s, and it has well-deserved reputation. Because the product is characterized by low operating temperature, simple operation, obvious desulfurization effect and energy saving and consumption reduction, and brings large economic benefit to users, it has extremely wide application prospect.

Kunshan Huahai Environmental Protection Technology Co., Ltd. is a comprehensive enterprise integrating scientific and technological research and development, industrial production and Global trade. It was established during the 12th Five Year Plan period of the country. Its headquarter is located in Kunshan Economic and Technological Development Zone (National Development Zone), the core area of Shanghai Jiangsu Hangzhou. The production base is located in Gugao Industrial Park, Taizhou City, Jiangsu Province. 

The company is committed to the research, development, production and industrial application of catalytic purification materials such as catalysts, purifiers and adsorbents. The company inherits the advantages of catalytic purification technology from the core research institute of the former Ministry of Chemical Industry and famous universities at home and abroad. The products are mainly used for catalytic purification of various raw materials (oil), tail gas, sewage gas and other materials in petrochemical, refining, natural gas, coal chemical, smelting and other industries. 

The company has strong technical research and development force, and a number of high-quality technical talents are LED by industry experts who enjoy the subsidy of the State Council to carry out scientific research and research. Over the years, the company has developed more than 50 kinds of catalyst, purification agent and adsorbent products independently. The products have been identified by national and provincial high-tech industries successively, high starting point of product technology and wide application scope. Some products fill the gap of domestic market for catalytic purification materials. The company has won more than ten awards, including Jiangsu Science and technology small and medium-sized enterprises, Jiangsu high-tech enterprises, national technology progress award, Jiangsu Science and technology progress award, national new product award, etc. During the 14th Five Year Plan period, the company is committed to promoting the carbon neutralization and carbon standard standards of the purification and environmental protection industry through the research and development and application of new catalytic purification materials, and forming a series of industry standards for catalytic purification materials.