Our corporation is specialized in the R&D, production and distribution of precise casting stainless steel valves, sanitary valves, fluid pipe fittings and sanitary pumps etc. Products. The products are designed in accordance with API, DIN, BS and GB etc. Standards. "Liyou" products are widely applied in such industries as petroleum, chemical industry, metallurgy, plumbing, pharmacy, beer, drink, dairy products and edible oil etc.