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DL-Tryptophan
54-12-6
Shanghai Meg Imp. And Exp. Corporation
Dandong Gilkuhn Import&Export Co., Ltd.
Ajinomoto Food Ingredients, LLC.
Orchid Chemical Supplies Ltd
Zhejiang Medicines & Health Products I/E Co., Ltd.
Jiangsu SOHO International Group Corp., China.
Zhangjiagang Shuguang Biological Factory
Wuxi Shengbaoluo Bio-Tech Co., Ltd.
Nanjing Ruizhi Industry & Technologh Co.,Ltd.
Qiude Biochemical Engineering Co.,Ltd.