Independent research and development of impurities, familiar with the market and impurity characteristics; We can ship out on the same day if the products are in stock; Focus on impurity development of new products in the market; Expert in customizi

As a professional chemical R&D and synthesis supplier, Shanghai Forever Synthesis Co.,Ltd. is specialized R&D and synthesizing APIs and Impurities. Besides, we value more special service, that is, to customize chemical synthesis according to client’s

Topbatt Chemical Co., Ltd., Established in 2019, located in Shenzhen, Guangdong Province, is a Manufacturer and Trading company which specialized in fine chemicals like Pharmaceutical Reference Standards and Stable Isotopes. Our Stable Isotopes produ