Yingkou Hangsheng Technology Industrial Co., LTD. Shenyang branch (sales air mill) (formerly Shenyang Aircraft Research Institute Powder Company, hereinafter referred to as: "Shenfei Powder"), is a state-owned enterprise directly under the Shenyang Aircraft Design and Research Institute of AVIC, founded in March 11, 1985, located in the urban area of Shenyang, China's industrial equipment manufacturing base. With the favorable conditions such as technology, talents, professional equipment and material technology of the fighter Aircraft Research Institute, Shenyang Aircraft Powder took the lead in developing fluidized bed air mill and horizontal turbine classifier in China, and QLM-IIQLM-IV fluidized bed air mill was rated as a national new product by the Ministry of Science and Technology and other departments. After more than 30 years of development, Shenfei Powder has become a well-known powder equipment enterprise at home and abroad. As a professional enterprise in the development of pulverizer, classifier and pneumatic conveying, Shenfei Powder has always adhered to the concept of aviation quality, reliability and excellence to serve users. Through the military enterprise quality certification and ISO9001 certification, with self-operated import and export rights, for many years has been rated by the municipal government as "contract-heavy, trustworthy" units. Shenfei Powder's products and services are well received by thousands of users at home and abroad, and are exported to all over the world in bulk all year round. Has been widely used in new materials, non-mineral, electronic materials, ceramics, chemical industry, metal powder, toner, rare earth, grinding and polishing materials, medicine and other dozens of industries.