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Tianjin Topwork Fine Chemical Co., Ltd. Specializes in manufacturing corticosteroid and relative intermediates. we provide excellent products and superb service to our clients. Topwork has gained admirable reputation in the wold market. We have gathered a group of energetic, diligent, and experienced experts who dedicate their energy to research and establish new products. To guarantee our products, we have established an internationally standard quality control system, all products have the latest standard of USP, EP, BP and CP. For your safety, we have established industrial protection, control of the environment and safety system. Topwork is the reliable company that specializes in manufacturing corticosteroid and relative intermediates; welcome to inquire from the world’s friend.