At present, well-known foreign reverse osmosis brands are Dow, Hyde Energy, Toray and Han Shi. These brands basically have business divisions and branches in China, among which Dow Film is an elite.

Domestic products include Beijing Times Wharton (formerly Huitong Source) and Hangzhou Big Dipper, both of which are imported from the United States and have the technology from film making to film rolling. However, the enterprise of Big Dipper seems to have died, and some domestic films were bought from abroad and rolled by themselves.