1. PP material characteristics: good soft and tough material, environmental protection non-toxic, relatively high temperature resistance, poor plasticity, plastic plastic difficulty, lack of luster on the surface, showing a dumb color
Sensory Identification: This product is white transparent compared to LDPE transparency, there is a sound when rubbing.
Combustion Identification: When burning, the flame is yellow and blue, the odor is like oil, and the melt drops, and there is no black smoke when burning.
2. PET material characteristics: This material is an environmental protection material, the hardness of the material is good, the transparency is strong, and the surface of the material is bright.
Sensory identification: This product is white transparent, hard feel, there is a sound when rubbing. Appearance is PP.
Combustion identification: There is black smoke during combustion, and there is a fire jumping phenomenon in the flame. After burning, the surface of the material is black carbonized. The fingers rub the burned black carbonates, and the carbide is powdered.

3. PVC material characteristics: It is one of the most used materials for plastic packaging. It has a moderate price, strong toughness, and good plasticity. If it encounters low-temperature weather, it will become brittle and easily rupture.

Sensory identification: Appearance very similar to EVA but elastic.

Combustion identification: black smoke when burning, off the fire, the burning surface is black, no melting drop phenomenon.