Ethanedioic acid,ammonium salt (1:?)

Shijiazhuang Yijinhang Chemicals Co., Ltd is a ISO9001: 2000 quality approval enterprise, , committed in supplying inorganic/organic chemicals, pigments and dyestuffs in China. It lies in Shijiazhuang,Hebei province of China. With advantages of owning our large scale capital-owned factories, we attribute our success to our enduring efforts to supply quality and cost-effective chemicals to our customers.

銆??At present,all our products are produced by our capital-owned factories,which are we...