HDPE siv rau hauv cov khoom thiab cov ntim khoom xws li cov khob mis nyuj, cov fwj tshuaj ntxuav tes, cov thoob margarine, cov thawv pov tseg thiab cov kav dej. Hauv cov raj uas muaj ntau qhov ntev sib txawv, HDPE siv los hloov cov raj xa ntawv cardboard mortar rau ob qho laj thawj tseem ceeb. Ib qho, nws muaj kev nyab xeeb dua li cov raj xa ntawv cardboard vim tias yog tias lub plhaub tsis ua haujlwm thiab tawg hauv cov raj HDPE, lub raj yuav tsis tawg. Qhov laj thawj thib ob yog tias lawv siv tau dua uas tso cai rau cov neeg tsim qauv tsim ntau lub txee mortar. Cov kws kho phom tsis pom zoo siv cov raj PVC hauv cov raj xa ntawv mortar vim tias nws feem ntau tawg, xa cov yas me me rau cov neeg saib, thiab yuav tsis tshwm sim hauv X-rays.
Lub sijhawm tshaj tawm: Lub Yim Hli-15-2022