How about Beijing Renchuang Technology Group Co., Ltd.

Renchuang Science and Technology Group is the first batch of high-tech enterprises in Zhongguancun National Independent Innovation Demonstration Zone, the first batch of innovative enterprises in China, and the construction unit of "State Key Laboratory of Silicon Sand Resource Utilization", which is dedicated to the development of sand industry. It is an explorer of "scientific sand control" represented by sand precision casting, sand increasing oil, sand boosting water, sand building and sand control, and a pioneer of industrial sand industry. At present, it has 6 subsidiaries, 1 research institute, 1 postdoctoral mobile workstation and 5 production bases.