Hangzhou Haina Environmental Protection Technology Co., Ltd. was established in 2005. It is an enterprise engaged in the research and development, manufacturing, and service of reverse osmosis and nanofiltration membrane components, and has core membrane manufacturing technology. It is also a demonstration base for China's reverse osmosis membrane industry. Since its establishment, it has formed deep strategic cooperation with many Fortune 500 companies such as the United States, Japan, and South Korea, and maintained long-term close cooperative relationships.

The company headquarters is adjacent to the world cultural heritage site of Liangzhu Ancient City. The new production base was built in 2021, with a first phase covering an area of 51 acres and a building area of 36000 square meters. It has an annual production capacity of 15 million square meters of membrane, 200000 industrial 8040 membrane components, and 18 million household membrane components. Haina has developed over 200 specifications of membrane products, including seawater desalination membranes, OC special membranes, anti pollution membranes, nanofiltration membranes, high water efficiency membranes, and ultra-low pressure membranes, through nearly 20 years of continuous innovation.

The enterprise has obtained ISO9001 and 14001 system certifications, and its products have passed NSF, RoHS, REACH SVHC standards and are exported to multiple countries and regions.

The company's R&D team is composed of several PhDs and masters in the field of separation membranes, and has formed close technical cooperation with multiple universities and research institutes to continuously innovate. The company owns over 60 intellectual property rights and has participated in the formulation of national, industry, and group standards more than 20 times.

Since its establishment, with the mission of making water cleaner, the company has always adhered to the spirit of sincerity, simplicity, and openness, and taken the development path of "refined production, technological products, brand differentiation, and humanized services". It is committed to building a reverse osmosis and nanofiltration membrane element industry base, striving to be a national pioneer in the membrane industry, and creating a "Chinese core" in the membrane industry.