Set up in 1985, we are an institute with high and new technology, engaged in oil purification and regeneration, developing and researching oil purifiers. We have obtained five national patents, having a golden prize in 5th Chinese New Technique, New Product Exposition. Our products have been chosen as national new processed products by National Science and Technology Committee. We insist on production principle of "Quality is the first". Products with advanced process are dependable. Our fully equipped institute provides customer with thousands of advanced and useful oil filters, which are strictly examined. ZYA-500 large two-stage vacuum oil purifiers are successfully used in Liaohe Oil Field, Petrochemical Industry and Dagang Oil Field of Tianjin. It can efficiently dehydrate and decolorize clearing oil, without any acetylene and hydrogen, specially suitable for transfer substation with 110kv-500kv. The new electronic vacuum purifiers not only have general advantages of common vacuum oil filter machines, but also can treat transformer oil at normal temperature. We are one of the ten excellent private enterprises of Chongqing. If you are interested in our products, please feel free to contact us.