and the domestic substitution process in the domestic market is expected to accelerate in the future.

polyolefin is a polymer of olefins, referred to as po, which refers to the general name of thermoplastic resins prepared by the individual polymerization or copolymerization of cyclic olefins such as ethylene, propylene, 1-butene, and 1-pentene. polyolefins are an important class of fine chemical products with good water resistance, coloring properties, chemical resistance, etc. they are currently used in various industries of the national economy such…