Shanghai Useal Technology Co., Ltd. (hereinafter referred to as Useal) was established in August 2017 and headquartered in Minhang, Shanghai, PRC. It is mainly engaged in the R & D, design, manufacturing, sales and service of mechanical seals, dry gas seals and their auxiliary systems for rotating equipment. Its main products include compressor dry gas seals, fan & blower dry gas seals, pump dry gas seals, agitator dry gas seals, pump mechanical seals, agitator mechanical seals, carbon floating ring seals, compressor dry gas seal control systems and mechanical seal supporting systems, which are widely used in petroleum, petrochemical, chemical, coal chemical, metallurgy, pharmaceutical, power, new energy resources and other industries.

Useal is committed to becoming an innovative company that continuously innovates in technology and management and provides customized overall sealing solutions for customers. The company vision is 'Be a world-class innovative company, home of professional elite'. Its core technology and management team comes from major multinational seal groups and China domestic mainstream seal companies. From the domestic replacement project of mechanical seals of petrochemical equipment introduced in the early 1980s to the in-depth research and development of compressor dry gas seals, especially high-pressure dry gas seals in this century, there are members of Useal's technology team. On the basis of decades of theoretical research and industrial practice, through the digestion, absorption and re-innovation of foreign advanced technologies, the company has comprehensively mastered the core technologies of mechanical seals and dry gas seals.

Useal is a brand-new company with first-class technology and management team. In addition to providing high-quality seal products, we will spare no effort to build a network-based and modern customer service and support system to meet the explicit and implicit needs of our customers. The gradual establishment of maintenance service centers, i.e. QRC, in Ningbo and other places is the first step in building a national service support system with our first-class technology and high-level management combined with modern Internet technology.

Under the leadership of Dr. Yang Huixia, a senior expert in dry gas seals and mechanical seals in China, Useal's technology team has always been paying attention to the sealing technical problems of rotating equipment in the field production of petroleum, petrochemical, chemical and other industries; and has always been adhering to scientific and technological innovation, and constantly developing new technologies and products. So far, the company has obtained 16 Chinese utility model patents, and 10 invention patent applications have entered the actual examination stage in the State Intellectual Property Office. The company was rated as a national high-tech enterprise in 2021.