Dayang Chem (Hangzhou) Co., Ltd.
Springautumn Biological Engineering Co., Ltd.
Shijiazhuang Dowell Chemical Co.,Ltd.
Jiangsu Haixiang Chemical Industry Co. Ltd
Zhejiang Taizhou Dyestuff Chemical Industry
Shanghai Seebio Biotech, Inc.
Zhenjiang Zhengdan Chemical Co., Ltd.
Beijing Ouhe Technology Co., Ltd.
Nanjing Chemical Reagent Co., Ltd.
Struchem Co., Ltd