Shenyang Kedi Tongda Mining Machinery Co., Ltd is established based on the state-owned China Northeast Coal Sorting and Cleaning Equipment Co., Ltd., which was founded in 1991. The Company is focusing on development and distribution of coal preparation equipment, and engineering design of coal preparation plant (EPC contractor), as well as O&M of coal prep plant. Kedi has been certified by ISO Quality System, and it is an industrial and academic research center for the Liaoning Technical University and the Heilongjiang University of Science and Technology. The Company has developed separation process equipment such as XZG series X-ray intelligent sorter, XCG series roller screen, XZQ series dense-medium shallow-trough separator, XZR series intelligent teetered bed separator (TBS), XZY series dense-medium drum separator, XJG series two-mass vibrating feeder, XDT series mechanical moving-sieve jig, and coal mine underground dense-medium shallow trough refuse discharge system, etc. At the same time, the Company has also carried out engineering design and technical upgrade of coal preparation plants, process design of underground lump coal refuse discharge and EPC contracting of coal preparation plants, etc.

Over the years, the Company has been committed to the research and development of new coal preparation technology and new equipment. The above-mentioned products and systems are all developed by the Company independently, and have obtained the national patent of utility model. Especially the research, development and application of underground dense-medium shallow trough refuse discard system has filled the gap of underground dense-medium refuse discard and comprehensive utilization process technology of reject, and is a revolutionary innovation in the field of coal mining and coal preparation in China. At present, the process system has been successfully operating in Jiyang Coal Mine of Shandong Xinwen Mining Group, Zhai Town Coal Mine, Inner Mongolia Yuxing Coal Mine and No. 12 Mine of Pingdingshan Tianan Coal Co., Ltd.