Beijing Guohua Technology Group is a multinational group company established in 2012 by Tangshan Guohua Technology Co., Ltd., founded in 1998, and acquired the long-standing coal preparation technology company in the United States (Denis, USA) in 2012. ). Currently, it has 11 subsidiaries, including 3 foreign companies in China. The Group is a technology-based enterprise integrating the research and development of new coal preparation processes and new equipment - engineering design and contracting - coal preparation equipment production and manufacturing - coal preparation plant operations.

The company has successfully overcome the technical problem of "coal preparation for raw coal without sludge and mixed heavy medium cyclone" in the international coal preparation industry for a long time, and has creatively developed the "three-product heavy medium cyclone without sludge and no grading and pressure-free feeding. "Complete sets of equipment and processes have greatly promoted the development of China's coal preparation technology. This equipment and technology streamlines the coal preparation process and equipment, reducing the investment and processing fees of coking coal preparation plants by 20%-40%, reducing power consumption by 40%-60%, and greatly improving product recovery rate.

Since its establishment, the company has undertaken the engineering design and contracting of more than 600 coal preparation plants at home and abroad (and most of them are general contracting), with a total design processing capacity of 906 million tons. In the past five years, it has undertaken more than 10 coal preparation plant projects (not including Dennis' original performance) in countries such as Turkey, India, Mongolia, Indonesia, and Kazakhstan, and has been highly recognized by the owners. The company invented the "high-efficiency and simplified heavy medium coal preparation complete technology and equipment" is the current coal preparation process with high share and recycling yield of coking coal coal preparation plants. The company's successful super heavy medium cyclone complete equipment is international. A coking coal sorting equipment with large single-machine processing capacity (1300t/h), wide sorting particle size (265-0.25mm), and a coal preparation system with low energy consumption and cost.