Susan Dong

China's leading filter element manufacturer

● Founded in 1995 in the town of China's wire mesh, Anping County, Hebei Province.

● Huanzheng® and Zhehan® is an ISO9001:2015 certificated company,a manufacturer integrating production, R&D, sales, and after-sales. At present, it has fixed assets of 25 million US dollars and more than 380 professional employees. Has three filter production workshops, a grinding tool casting workshop, two welding workshops, a cleaning workshop, a solid-liquid separator manufacturing workshop, and there is much independent research and development production equipment, the efficiency is far ahead of the market.


Email: Susandong520@gmail.com