PP and PE are made of Polypropylene, while PVC is a synthetic material. The physical properties of PP and PE are also quite different. PP is a hard and brittle material that can be cut easily, but it doesn't hold up as well to water or sunlight. PE is a softer, more flexible material that moors up tightly to the surface it's covering and resists moisture and UV rays better.
2. PVC has a much higher resistance to heat than either PP or PE. This means that it can withstand high temperatures without melting or blistering, making it a good choice for products that will be exposed to direct sunlight or hot weather conditions.
3. PVC is not as strong as PP or PE when it comes to resisting impact damage, so it may not be the best choice for items that will be subject to frequent collisions or impacts from external forces.