Domestic manufacturers of decanter centrifuges are Chongqing Jiangbei Machinery Factory, Guangzhou Heavy Machinery Factory, Xiangtan Centrifuge Factory, Haishen Electromechanical, Zhejiang Qingtian Special Equipment Factory, Nanjing Oasis Machinery Factory, Shanghai Chemical Machinery Factory, Shanghai Centrifugal Machinery Research Institute and other more than ten enterprises. Part of their technology mainly comes from direct technical cooperation with foreign centrifuge companies, the introduction and production, such as cooperation with France Guinard, Germany Humboldt (Humboldt) and other companies. Another part of the manufacturer's technology mainly from independent development, or the introduction of foreign technology, digestion and absorption on the basis of gradual development, but there is still a part of the stay in the imitation of foreign companies on the technology, basically belongs to a simple replica of foreign technology, the lack of independent innovation.