Qingdao Changjia Machinery Co., Ltd., located in Lingang Industrial Park, West Coast New Area, the Ninth National New Area in China, is a backbone enterprise of foundry machinery and environmental protection machinery integrating scientific research, development, production, sales and service. The company has the right to import and export by itself and has passed the certification of ISO9001 international quality system. It has successively won the honorary titles of national high-tech enterprises, Qingdao Specialized New Demonstration Enterprises and other honorary titles. It also has a technology center of Qingdao shot blasting cleaning equipment enterprises, Among which the environmental protection type shot blasting machine has been recognized as a famous brand product in Qingdao by Qingdao Municipal People's Government. 。 The company has two pillar industries: cleaning machinery and environmental dust removal equipment. It is dedicated to the research, development, manufacture, installation and commissioning of shot blasting cleaner and environmental dust removal equipment. The product adopts 3D design, CNC plasma cutting, automatic welding, manufacturing center, and through cooperation with scientific research and academic structure, to ensure the performance of the product and the international advanced technology. At present, it has provided the overall solution for cost-effective surface cleaning and dust removal system for metallurgical foundry, automobile shipbuilding, construction chemical industry, mining engineering, railway locomotive and other industries in China. At present, a perfect service system has been established, which integrates design, manufacture, installation, commissioning, training, after-sales service, spare parts supply and equipment upgrade.