Summary of domestic and international RO membrane brands

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Recently, I’ve wanted to conduct a comprehensive analysis and understanding of the RO membrane brands available on the market. I’ve already gathered some information, but I hope everyone will kindly provide more details about other RO membrane brands. Additionally, I’d appreciate it if you could offer analyses and comments on these domestic and international brands, so that we can gain a deeper understanding of the RO membrane market.

**Foreign Brands:**
- Dow Chemical/Filmtec (USA) – A traditional leader; high quality and stable performance, but at a high price.
- Hydranautics/Nitto Denko (USA) – The second-largest player in the RO membrane industry; its applications are less widespread compared to Dow’s.
- Koch/Fluid System (USA) – Its RO membranes are not as strong as those used in UF processes.
- GE/Osmonics/Desal (USA) – Thanks to GE’s engineering expertise, their products are in high demand.
- CSM/Sehan (South Korea) – Seems to offer good value for money.
- Toray (Japan) – Said to have high-quality membranes, with many large-scale seawater desalination projects under its belt.

**Domestic Brands:** (Their performance is roughly comparable to that of foreign brands, but their lifespan is slightly shorter and their prices are much lower.)
- Beijing TimeWater (Huitong Yuanquan) – Has developed rapidly over the past 10 years; enjoys a good reputation in China, but lacks sufficient experience.
- Hangzhou Water Treatment Center (Beidouxing) – One of the strongest domestic companies, with extensive experience in seawater desalination.
- Shanghai Garnet – No official website could be found :sweat:
- Shenzhen Wellington – A small company without any independent intellectual property rights.
- Beijing Hydranautics – A copy of the American Hydranautics brand, but it has managed to grow significantly, with branches across the country :rol:

I hope everyone can provide more information and comments. (It is said that there are also excellent RO membrane brands in Singapore and Europe; why haven’t I come across them?) ）