China
Qingdao Sigma Chemical Co., Ltd. (QSC)
No. 130, Shandong Road Jiahexinxing, Shibei District, Qingdao, China
Qingdao Sigma Chemical Co., Ltd.) mainly develops, manufactures and sells pharmaceutical raw materials, chemical intermediates, biochemicals, veterinary drugs and nutritional products, with synthetic capacity ranging from grams to tons, and provides custom synthesis and contract production (CMO). Peptides are one of its product lines. The official website lists GHRP-6, CJC-1295, Melanotan, HGH Frag 176-191, Ipamorelin, Hexarelin, PT-141 and other peptide raw materials, and claims to have a professional production quality control team, domestic and foreign warehousing and global shipping channels.