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Welcome to JSG, one of the most professional producer of Neutral Glass Vials and Ampoules for injection in China. As a private company initiated in six years ago, JSG cherishes the great experience in manufacturing and exporting overseas, and is dedicated to the manufacturing and marketing of Ampoules, Vials and Neutral glass tubes for the Pharmaceutical industry.
Shandong Ruier Seal Co., Ltd. is committed to the development of the seal industry for ...
