Zhejiang Dayang Biotech Group Co., Ltd. engages in the production and sales of potassium salt and veterinary drugs. Its products include potassium carbonate, potassium hydrogen carbonate, amprolium hydrochloride, ammonium chloride, 2-chloro-6-fluorobenzaldehyde, 2-chloro-6-fluorobenzoic acid and 2-chloro-6-fluorobenzyl chloride. The company was founded by Yang Gui Chen in 1976 and is headquartered in Hangzhou, China.