Georg Oest Mineralölwerk GmbH & Co. KG

De Nora is a global company and a leading designer, manufacturer and supplier of electrodes, coatings and complete electrochemical solutions to serve diversified markets.

Zhangjiajie Jiurui Biotechnology Co., Ltd. is the largest domestic leading enterprise in the deep processing of gallnut series products, restructured from Zhangjiajie Tongyuan Chemical Co., Ltd. Its registered capital is 55 million RMB.

Baoji Ruike Pharmaceutical Chemical Co., Ltd. is the largest production and research and development base for precious metal catalysts in China. The company is the first in the industry to pass ISO9001 quality system certification and specializes in