1. Appearance: Pet is a highly crystalline polymer with milky white or light yellow color and smooth surface. And pp is a colorless, odorless, nontoxic and translucent solid material.
2. Features: Pet has the characteristics of creep resistance, fatigue resistance, wear resistance and dimensional stability, with small wear, high hardness and the greatest toughness among thermoplastics. While pp has high thermoplasticity, light specific gravity and chemical resistance.
3. Usage: Pet is mainly used in electronic appliances, such as sockets, electronic connectors, rice cooker handles, TV deflection coils, etc. And pp is widely used in the production of fiber products, such as clothing, blankets, medical equipment and packaging of food and medicine.