Founded in 1992, Xi'an Tianhou Filter Technology Co., Ltd. was started by some of the professors, engineers and administrators from North Western Polytechnical University. For decades, the company, relying firmly on the advantages of abundant technology and talents, has forged ahead into a high-tech enterprise,which focus on researching and manufacturing oil quality analyzer, portable octane analyzer and diesel oil purifier for 21 years. The products always win the public praise from markets. our company occupies area of more than 3000 Square meters and possesses over 200 employees In Caotang Industrial Zone, Huxian County, Xi'an China. Among which 38 personnel are our researchers and Technical engineers. Presently in overseas markets, 3 series patent products have already been exported to 20 countries, Iran, the UK, Malaysia, Iraq, etc.

The THY series Oil Quality Analyzer solved the engine management problem of 'in what time to change the oil', and enabled users to change the lubricant based on oil quality instead of regular time basis.

In 2004 Tianhou Company successfully cooperated with United States pre-filter Boston Co., Ltd to jointly develope the "Janenope" Diesel oil purifiers , which were widely applied to oil fields, fishing ports, all kinds of diesel vehicles and construction machinery, etc., diesel oil purifier protect engine effectively, cut down maintenance costs, lower exhaust emissions, and reduce the fuel consumption by 5%-10%. Moreover, the Diesel oil purifier is featured with excellent performance for oil-water separation.

Through constant hardwork Tianhou group has obtained 172 patents and more than 20 honors from Goverment and Authoritative organization, already becoming partner of National Large internal combustion engine manufacturer, such as Yuchai Group and Weichai Power.

We have good management process and quality control systems with ISO 9001 quality management system certification which insure the good performance and stability of our products.

Excellent quality ,timely aftersale service and quick delivery are our promises to customers and we hope to build a long-term win-win cooperation with the customers in the world!