We are Weifang Freda Chemical Co., Ltd, mainly specializes in developing oceanic chemical. It is a joint-stock company integrating scientific research, development, production and management. We are the leading manufacturer and exporter of oil drilling chemicals in China, we can supply best quality and competitive price, also supply prompt shipment and specialised service, Our supply ability is polyaluminium chloride 30000MT, 93% and 96% SLS 20000MT, Sodium CMC 10000MT.