A Patent of China Coal First Construction Company Limited Is Recognized as Utility New Model Patent by the China National Intellectual Property Administration

Date:2020 -04 -29

China Coal First Construction Co., Ltd.s inclined well construction trestle-type fully closed-loop integral hydraulic formwork trolley is recognized as utility new model patent by the China National Intellectual Property Administration. The patent is utilized in the construction of Yuandatan Coal Mine and Macheng Iron Mine, which has effectively improved quality of on-site construction, production progress and security level, and has high promotion and application value.