Henan de hoau water cleaning materials ltd. Is a scientific and technological company that produces and sells water treatment materials. ... Has many years of production experience and considerable scientific power, has a steady and reliable product of diverse quality and credibility. The series of water treatment agents produced are widely used in the water plant, running water company, electricity, steel, oil fields, chemical paper, etc. The company adheres to the principle of “quality-based, trust-based” and “advances professional management, produces professional products and provides professional services”。