Polyethylene cov ntawv txheeb tau dav siv nyob rau hauv ntau thaj teb:
Kev Lag Luam: Tshuaj lom neeg tiv thaiv (reactor hauv ob sab phlu, acid thiab tsheb thauj khoom thiab tsheb thauj mus los (khoom siv tshuab, cov khoom siv tau khoom siv (lub zog, cov gaskets).
Kev tsim kho tsim: waterproofing thiab noo noo-pov thawj txheej, vov waterproofing membrane subrier (highway Sictrier cov khoom).