1. UF film is made of ultrafiltration membranes, while Ro film is made of reverse osmosis membranes.

2. UF film is used for removing larger particles and molecules, while Ro film is used for removing smaller particles and molecules.
3. UF film has a lower rejection rate than Ro film, meaning that some contaminants may still pass through the UF film, while Ro film has a higher rejection rate.
4. UF film is used in water treatment applications such as pre-treatment for RO systems, while Ro film is used in desalination and other high-purity water applications.
5. UF film requires less pressure than Ro film, making it more energy-efficient.
6. UF film is more cost-effective than Ro film, making it a popular choice for industrial and municipal water treatment applications.