Duce Chemicals Co., Ltd has independent import and export licence, our products:caustic soda, sodium sulphide??sodium hydrosulphide and other chemical products are exported to southeast Asia, Middle East, Europe, Africa, more than 100 countries. Duce Chemicals Co., Ltd  in "honesty can run" as concept, "quality first" as principle provides excellent service and high quality of products for customers??onest ??uality??cience and technology innovation??ser supreme ---Duce Chemicals Co., Ltd??ervices for you with sincere and promise you with quality realization