Foam Plastic

Foam plastic is a common type of lightweight porous polymer material in foreign trade, usually made from polystyrene (EPS), polyurethane (PU), polyethylene (PE), etc., through a foaming process. Its core characteristics are low density, good cushioning performance, and thermal and acoustic insulation, so it is widely used in packaging, construction, cold chain, automotive interiors, and other fields. In foreign trade business, this term often appears in product descriptions, HS code classification (such as 3921.1100, etc.), contract quality clauses, and inspection standards. Usage scenarios include export packaging materials, finished products (such as foam boards, foam boxes), and as filling material. Precautions: First, foam plastics with different base materials have different classification and regulatory conditions and must be declared accurately; second, some countries have environmental requirements for them (such as degradability, flame retardant grade), and test reports need to be provided; third, distinguish it from terms such as 'Sponge' and 'Honeycomb': foam plastic emphasizes the closed-cell/open-cell structure formed by the foaming process, while sponge is mostly natural or synthetic rubber foam, and honeycomb refers to a bionic structure. Foreign trade practitioners should clarify material, density, and use to avoid customs clearance delays or returns caused by vague descriptions.