1. Agriculture: used for greenhouse covering, ground film, etc., to keep warm, keep moist, and prevent insects. For example, in a vegetable greenhouse, plastic film can maintain a suitable temperature and humidity to promote vegetable growth.

2. Packaging industry: packaging food, daily necessities, industrial products, etc. For example, plastic wrap in food packaging can extend the shelf life of food.

3. Industry: used for rainproof, dustproof, isolation, etc.

4. Construction field: as part of waterproof roll material.