Chongqing Optical submersible Electromechanical Research Institute, founded in 1985, is a national high-tech enterprise engaged in the research of oil purification and regeneration process and the development of oil filtering equipment. It has obtained five national patents, won the gold medal of the 7th China New Technology and New Product Expo, and was rated as a national new product by the National Science and Technology Commission.

Adhere to the production concept of "quality first", with reliable product quality, advanced technology, complete production equipment and complete detection means. It has provided thousands of advanced and practical oil filtering equipment to users, enjoying a high reputation among customers.