PE是聚乙烯塑料，基础的一种塑料，塑料袋、保鲜膜等都是PE,HDPE是一种结晶度高、非极性的热塑性树脂。原态HDPE的外表呈乳白色，在微薄截面呈半透明状。PE具有优良的耐大多数生活和工业用化学品的特性。
PE is the most basic of polyethylene plastic, a plastic, plastic bags, cling film is PE, HDPE is a high degree of crystallinity, non-polar thermoplastic resin. The original state HDPE appearance is milky white, in the small section are somewhat translucent. PE has good resistance to most living and industrial chemical characteristics.