HF is a leading manufacturer of hydraulic purification equipment and online contamination test machine in china, which engages in reserching&developing, producing and selling in integrated company. Since the foudation of our company, under the duty of devoting our efforts to develop the advanced pruification and testing for saving energy sources, adopting the advances management and with the reliance on the strong technical force, HF has developed into a big base specialized in producing purification and testing, our products are outstanding because of its excellent in quality, stability in service and speciality of products. Our products can be applied to many fields, such as aviation industry, electric power, petroleum chemical, metallurgical industry, mine, shipping, railway, paper making industry, cement and water purification.