Founded in 1992, Xi'an Tianhou Filter Technology Co., Ltd is an integrated high-tech enterprise, which specializes in researching, developing, producing and saling Oil Quality Analyzer, Octane Analyzer and Diesel oil purifier. Our company has devoted to spreading the idea of lubricating Management and proactive maintenance for engine. With the management concept of innovative consciousness as our lead, energy-saving as our duty, we has dedicated to the field of detecting oil and purifying diesel oil, and got fruitful achievements over the past 21 years. In 1992, the technical index of THY-series Oil Quality Analyzer we researched and developed has attained international advanced level, and made up the gap between oil quality analyzing and purifying technology in China. The invention in China basically solved the device management problem of ' when to change the oil', and enabled users to change the lube oil based on its quality not on a regular time basis. In 2004, the "Janenope" Diesel oil purifiers series, jointly developed by United States pre-filter Boston Co., Ltd and our tianhou group, were widely applied to oil fields, fishing ports, various diesel vehicles and construction machinery, etc., and has ever caused a stir in the filed of energy conservation and emissions reduction all over the world. Not only had the invention made a major break through in the respects of diesel oil purifying technology, but enabled us to protect engine effectively, cut down maintenance costs, lower exhaust emissions, and reduce the fuel consumption by 5%-10%. Moreover, the invention was endowed with high performance for oil-water separation. Through constant hardwork and unremitting efforts, Tianhou group has awarded honors for Chinese High-tech Enterprise Certification, National Innovation Fund Support Program, State Torch Program, Xi'an Top 100 enterprise (No.25).