The chai state water purification unit is located in the golden triangle of the pearl river, in the city of nakayama, a specialized hydro-electric enterprise dominated by the design, development, production, manufacture and marketing of drinking water and water treatment products. Firms are firmly committed to the creation of science and technology, to the development of underlying product technologies, to product quality and integrity services, to the pooling of good talent in the technical fields of specialization, to the formation of high-quality scientific teams with young and medium-sized technology elites, and to the accumulation of extensive product design experience and deep theoretical knowledge in ongoing product development practices. Based on the characteristics of water quality in different regions of the country and the drinking water habits of the people of the country, groundbreaking improvements have been introduced, leading to the quality and scalability of products at the forefront of peers. The company currently covers product lines such as ro water purification machines, large-scale water treatment equipment, water purification units, water purification equipment, ultra-filter filters, etc., with strong strengths and advantages in sewage treatment works, drinking water improvement works, etc. The company has sophisticated technical equipment, rigorous testing, a sound management system, a sound after-sale service, and a well-functioning water treatment equipment (mechanical) that meets the different needs of families, units, shops, writing buildings, schools, factories, hospitals, hotels, living quarters, etc. It is now a good option for the units to improve water quality and healthy drinking water. "building on creation, full-time quality, good faith services, common development" is a consistent pursuit of the united states, and the provision of quality, safe, reliable technology and products to clients is its enduring approach. We will continue to move beyond ourselves and, as always, create value for our clients by providing better-quality technologies, products and services. With a high-level scientific team and close scientific cooperation with the nanjing university of technology, nanjing university of technology, nanjing university of forestry university, and its unique achievements in the development of water-quality purification filters and water purification equipment, the successful development of a range of products and technologies, such as nanomicrocryl composite filters, sewage bathymetric average filters, powdered ash-modified sewage filters, specialized water filters, ultraviolet blubber cleaners, filter replacement smart alarm water cleaners, three invention patents, fourteen practical novel patents and two visual design patents. In view of the quality of the product, the product is considered to be a work of life, with a rigorous product design, production management system and a well-developed after-sale service system, the chinese ministry of health has been awarded iso 9001:2000 qualification, 3c certification and the national production of sanitary licences for safe drinking water products, all of which have been subjected to rigorous testing of the environmental and health-related products of the china centre for disease prevention and control。