Welychem Corporation Limited established in Shanghai on Oct 17th, 2000 is a professional phosphorus chemicals company in China specializing in manufacturing and exporting Phosphoric acid 75%/85% min Food grade, Polyphosphoric acid 95%/105%min, Phosphorous Acid 99%min, Phosphorous acid 98.5%min, MAP, DAP, MKP, MCP, MDCP, DCP and the related phosphates and other chemical products.