Beijing Yizhong Weiye Chemical Co., Ltd

Since the foundation in 1980, we have been manufacturing flat gaskets for all branches of industry, for technical trade and for exporting from the materials. As a reliable seal manufacturer, we ensure you with our qualified employees and the machine

DOTTIKON EXCLUSIVE SYNTHESIS is a fine chemical company, specializing in hazardous, safety-critical chemical reactions focused on the exclusive synthesis of fine chemicals - providing custom manufacturing of APIs and advanced intermediates to major p