How about yaben chemistry?

This company is good.

Shanghai Yaben Chemical Co., Ltd. is also influential in the field of environmental protection industry. The company's unique anaerobic digestion and industrial waste treatment technology is at the international leading level, so it is very good.

Yaben Chemical's main business is the research and development of high-end chemical technology. At present, the research results in chiral technology, nitrogen-containing heterocyclic derivatives, biological enzymes and other technical fields have reached the international advanced level.