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L-Tryptophan
73-22-3
Shandong Lanyuguang Chemical Co., Ltd
Shantou Baokang Pharmaceutical Co., Ltd.
Anyang Criss Chemicals Co,.ltd.
Huang Shijie
Jinzhou Jirong Amino Acid Co., Ltd.
Credokorea
The Apotex Group
Atom Scientific Ltd
Vega Pharma Chemicals
Avantor Performance Materials, Inc.