Zhejiang Zhengda Environmental Protection Equipment Co., Ltd. is a modern high-tech enterprise integrating scientific research, design, manufacturing, sales and service. The company was founded in 1995. After years of hard work and accumulation, on the basis of introducing, digesting and absorbing advanced technologies at home and abroad, its self-developed, designed and produced series of products have obtained a number of national patents, and many other technologies have been preliminarily confirmed by the China National Intellectual Property Administration. The company has obtained ISO9001-2008 international quality system certification. The company's main products include a series of horizontal screw centrifuges, plate and frame filter presses, extrusion filtration separators, fine sand extractors, and other sewage treatment equipment. The product is widely used in urban domestic sewage treatment and industrial wastewater treatment projects, as well as mineral processing and pile driving mud treatment projects. Its application scope covers dozens of industries such as municipal sewage, printing and dyeing, papermaking, leather, petrochemicals, pharmaceuticals, metallurgy, construction, chemical industry, brewing, light industry, coal dust, electroplating, food processing, etc. It is an important separation supporting equipment in urban life and industrial production processes. In the research and development of the leading product series of horizontal screw centrifuges, special design of the core structure of the product is adopted to achieve more significant separation effects with smaller separation factors compared to other equipment. To adapt to the separation of various high concentration suspensions on a large scale, especially for sludge with high viscosity, strong oil content, and difficult separation by other equipment, the company can design core structures based on material characteristics to truly tailor equipment for the enterprise. The company implements the enterprise standardization strategy positioning of "technology patenting, patent standardization, and standardization internationalization". Long term focus on the solid-liquid separation industry, with product innovation and system integration as the pillar and direction of the company's development, expanding and cultivating emerging niche markets, continuously expanding business scale and optimizing product structure, in order to win a wider market. To explore without a clear path, to innovate while fearing conservatism. We adhere to the management philosophy of "people-oriented" and the development tenet of "excellent quality, first-class service; integrity for the world, mutual benefit and win-win". The company will steadily develop in the constantly changing industry competition and make unremitting efforts to build a leading and internationally renowned manufacturer of solid-liquid separation equipment in China.