As a wholly owned company, Black Whirlwind Engineering Machinery Development Company was established upon the approval of China Metallurgical Geology Bureau as a result of the integrative recombination of Black Whirlwind Investment Company, Yichang Black Whirlwind Engineering Machinery Company Ltd. and Yichang Black Whirlwind New Building Material Co., Ltd. The company has been mainly engaging in engineering and manufacturing industry, and also devoting to stone processing and real estate development as sidelines. Having passed the CE certificate and quality management system of ISO9001, ISO14001, OHSAS18001, etc. As a professional manufacturer of such equipment as desander, pressure injection, atmosphere dedusting device, etc., the company has obtained multiple patent technologies. The independently developed SNS series high pressure injection pump, ZX series desander and other products are of high technology, sound application performance, and are used widely in the infrastructural industry. The injection pump has a large market in such anti-seepage and reinforcement injection projects as water conservancy, hydropower, urban construction, coal mine, mine, etc., especially the field of hydropower curtain injection. The desander is mainly used to purify and recycle the mud in the construction of such projects as cast-in-situ bored pile, underground continuous wall, non-excavation, mud-water shield tunnel, etc. Especially in the construction of mud-water shield tunnel, it could serve as a substitute for imported equipment to solve the problem of mud cleaning and recycling efficiently. Through continuous technology innovation, its ZX series desander has reached international advanced level, and the company also becomes a sole and exclusive manufacturer of mud treatment equipment matching the mud-water balance shield machine.