Propyl propanethiosulfonate CAS 1113-13-9 Propylpropane thiosulfonate 1113-19-9

Qingdao Ouchem Trade Co., Ltd is an enterprise dedicated to the import and export of chemicals, APIs and related intermediates. Founded in October 2000, the company now has an annual turnover of US$30 million with 28 employees. While providing customers with high cost-effective products, our team focuses on whole-hearted service, enjoying high profile and market share home and abroad. With main market in Japan, we have also established long-term cooperation with more than 20 countries including the United States, UK, Germany, Korea, Thailand, India, Uruguay, Argentina, Turkey, Spain, Egypt, etc., winning a good reputations and credibilitys in world market.

       Diphenyl Sulfone（DPS） has been produced as GMP standard since the year of 2016, used mainly for thermal paper sensitizer, polysulfone resin, and engineering plastics, etc. It is exported to Japan, USA, Thailand, Brazil and so on.

       Oct. 2000 Weifang Ouchem Trade Co., Ltd founded at Xinhua building, Weifang, Shandong, China

       Capital: CNY 1,000,000.00

　　Jan. 2003 Qingdao Ouchem Trade Co., Ltd set up at Qingdao free trade zone

　　Capital: CNY 500,000.00

　　Dec. 2004 Weifang Ouchem Trade Co., Ltd capital increased to CNY 2,600,000.00

　　Oct. 2007 Weifang Ouchem Trade Co., Ltd moved to A-19, Huarun International Mansion,

　　No.2577, Dongfang Road, Weifang, Shandong, China

　　Apr. 2010“Audited Supplier” certified by Made-in-China and SGS

　　2007-2015“Advanced Foreign Trade Enterprise” and “Leading Imp.& Exp. Company”

　　Apr. 2019“ISO9001:2015”and“ISO14001:2015” certified by GIC