Hebei Zhengna Trading Co., Ltd is a professional manufacturer in China with over 10 years of experience. Over the years, we have been committed to providing high-quality products for overseas markets. Our main products include: Cooling tower accessories: Cooling tower fills, drift eliminators, air inlet louvers, spray nozzles, etc. Water treatment products: Tube settlers, bio balls, MBBR media, water tanks, etc. Electric power tools: Fiberglass duct rodders, cable rollers, engine-powered ...