In fact, there is no saying which one is best. First, understand your own raw water quality and your own needs, and then choose based on these. When choosing, pay attention to the membrane's salt rejection rate, water flux, minimum operating pressure, operating temperature, water inlet requirements, etc.

What brands of reverse osmosis membranes are there?

Overseas: Dow, Koch, Toray, and Haiderneng.

Domestic: Tianjin Motian.

Reverse osmosis membrane brand introduction:

Dow

Dow is a diversified chemical company that uses the power of science, technology and the "human element" to continuously improve. In 2010, Dow's annual sales were US$53.7 billion, with approximately 50,000 employees worldwide, operating 188 production bases in 35 countries, and more than 5,000 products. The Dow Chemical Company has been named by Business Insider as one of the top ten companies in the world to "save the planet" for its FILMTEC reverse osmosis membrane technology and products it developed.

Koch

Koch is an American company registered in Colorado, USA. Focus on registered trademarks as "KOCH" and "KOCH". Koch's RO reverse osmosis membrane, NF nanofiltration membrane, UF hollow ultrafiltration membrane, rolled ultrafiltration membrane, microfiltration membrane and other membrane products have decades of experience in membrane manufacturing and application, and have truly become A well-known brand with the most complete product chain in the field of membrane separation. One of the largest filter membrane suppliers.

Toray

Toray was founded in 1926 and is headquartered in Tokyo, Japan. Toray Group is a world-renowned high-tech multinational enterprise with core technologies of organic synthesis, polymer chemistry, and biochemistry. Toray is one of the earliest companies in the world to engage in the development of reverse osmosis membrane technology. It began research on membrane technology as early as the 1960s, ranging from the selection of raw materials, the development of membrane technology, and the design of membrane element structures. , has made outstanding contributions to the application and development of this technology in ultrapure water, seawater desalination and other water treatment fields.

HYDRANAUTICS

HYDRANAUTICS was founded in 1963 and is headquartered in Oceanside, California, USA. In 1987, it was merged into NITTO DENKO CORPORATION and is one of the wholly-owned subsidiaries of Nitto DENKO Group in the United States. After 40 years of unremitting efforts, it has become one of the most famous reverse osmosis and nanofiltration membrane manufacturers with the largest product specifications, the largest production scale, and the most patents in the world's separation membrane manufacturing industry. It is also the first US company to pass ISO9001 international certification. Certified reverse osmosis membrane manufacturer.

Tianjin Moutian

Tianjin Moutian Membrane Technology Co., Ltd. is a company with a complete industrial chain of membrane product research and development, production, membrane equipment manufacturing, membrane application engineering design, construction and operation services. A high-tech enterprise, its predecessor was the Membrane Separation Research Institute of Tianjin University of Technology established in 1974. The company has served municipal water supply and sewage treatment and reuse, industrial water supply and wastewater treatment and reuse, seawater desalination, drinking water purification, biopharmaceutical purification, concentration and separation treatment and other fields.