PS and PP are both common plastic materials, and PP is also called polypropylene, which is a nontoxic, tasteless and odorless thermoplastic resin with good heat resistance, cold resistance, corrosion resistance and electrical insulation, and is often used in food packaging, medical devices, toys and other fields.
PS material, also known as polystyrene, is a colorless and transparent thermoplastic with good transparency, hardness, brittleness and corrosion resistance, and is often used to make packaging boxes, tableware and toys.
However, PS materials will release harmful substances at high temperature, such as styrene monomer and benzene substances, which may cause harm to human health. Therefore, PP material is more popular in food packaging and other fields.