Qingdao Sigma Chemical Co., Ltd.
Country: China (Mainland)
Business Type: Trading Company
High quality Nootropics powder Sunifiram , Dm-235CAS NO.: 314728-85-3
High quality 4-Phenyl-2-pyrrolidone-1-acetamide/nootropics powder Phenylpiracetam / CarphedonCAS NO.: 77472-70-9