1, Xingyuan Filtration: Hangzhou Xingyuan Filtration Technology Co., Ltd. (formerly Hangzhou Xingyuan Filtration Co., Ltd.) is a domestic manufacturer and service provider specializing in providing integrated services for filter press filtration systems. Xingyuan Filtration integrates research on materials and filtration technology, design of control system, production of filter press and system debugging services, and provides professional solutions for customers in the fields of environmental protection, minerals and processing, chemical industry, food and biomedicine. 2. Jinjing Environmental Protection: Jinjing Environmental Protection is a professional manufacturer, seller and service provider of filter press with the most complete specifications and the largest output in the world. At the same time, it specializes in producing filter press accessories and supporting equipment such as slurry mixing, filter cake conveying and filter cake crushing. To provide users with the best overall filtering scheme. Responsible for drafting and revising the national standards for separation machinery, filter press and filter plate, and key high-tech enterprises in the national torch plan. "Jin Jing" trademark has been protected by international trademark registration in Madrid. Chairman Jiang Guiting was named "Top Ten Outstanding Entrepreneurs in China". 3. Jiangsu Xingxin: Jiangsu Xingxin Separation Equipment Manufacturing Co., Ltd. was established in 1999. Is a professional manufacturer of diaphragm filter press, frame filter press, box filter press and filter plate of filter press, engaged in the research, design and manufacture of chemical machinery. Have all kinds of precision machining and cold working equipment, as well as filter press solid-liquid separation equipment. The company has a research and development team composed of 37 senior technicians. The company covers an area of 50,000 square meters, including more than 20,000 square meters of assembly workshop. It has four production lines of ultrafiltration and pressure filtration equipment, with an annual production capacity of nearly 2,000 units. 4. Zhong Da Bai Park Jung Su: Shandong Zhong Da Bai Park Jung Su Filter Press Co., Ltd. is a wholly-owned subsidiary of Shandong Zhong Da Bai Park Jung Su Group. Zhong Da Bailaite Group is a modern high-tech enterprise group dedicated to the research, development, manufacture, sales and service of filter press and central air conditioning products. The group covers a total area of nearly 700,000 square meters, with annual sales exceeding 654.38+0.5 billion yuan and annual profits and taxes exceeding 654.38+0.5 billion yuan. Is the largest R&D enterprise of central air conditioning and filter press in northern China. 5. Hengshui Haijiang: Hengshui Haijiang Filter Press Group Co., Ltd. was established in 1985, with total assets of 152 billion yuan, with a total area of 800,000 square meters and 3,000 employees. Among them, there are 98 senior engineers and technicians and 3 19 intermediate engineers and technicians. Over the past twenty-five years, Haijiang Group has been developing rapidly in the form of fission, adhering to the corporate purpose of "self-improvement, serving the country through industry". Now it has developed into the largest solid-liquid separation manufacturing enterprise with the most complete specifications and the best quality in China. Reference source: Polaris environmental protection network-sewage treatment filter press is the first in China.