Gansu Tongshi Technology Co., Ltd. is a technology-driven chemical enterprise located in the Chemical Industry Park of Minle County’s Ecological Industrial Park, Zhangye City, Gansu Province. The company traces its roots back to 1958, when it was founded as the Work-Study Program Base of Haimen Normal School. Over the decades, it evolved through several stages—from a school-run factory to Nantong Reagent Factory, then to Nantong Tongshi Reagent Co., Ltd., and later to Suqian Tongshi Reagent Co., Ltd.—before ultimately relocating to Zhangye, Gansu in 2019. With nearly 70 years of production experience in fluorine chemistry, the company holds a nationally issued production license for industrial chemical reagents.