Tsuas hais PE zaj duab xis tshuab tshuab yog polyethylene li raw khoom, PP zaj duab xis tshuab tshuab yog siv polyethylene li raw khoom.
Polyethylene: Ib qho polymerized vinyl resin siv tshwj xeeb tshaj yog nyob rau hauv cov thawv, cov tais diav hauv chav ua noj, thiab cov raj, lossis hauv cov yob thiab cov ntawv rau ntim.
Polypropylene: Ib qho thermoplastic resin uas yog ib qho polymer ntawm propylene.Lawv tawv heev thiab siv los ua castings thiab fibers.
