Polystyrene (PS) is a thermoplastic non-crystalline resin, coplorless, odorless, tasteless and shiny, transparent bead or granular solid. It is hard and brittle, colorless and transparent, can be mixed with various dyes to produce different colors, and has good rigidity, gloss and chemical resistance. light weight,low price, low water absorption, dimensional stability, good coloring, good electrical properties, transparent products, superior performance.PS is mainly divided into general-purpose polystyrene (GPPS), impact-resistant polystyrene (HIPS) and expandeed polystyrene (EPS)
