Kev tso cov khoom siv tshuaj ntxiv rau lead thiab salt yog qhov khoom siv tshuaj ntxiv uas muaj kev ua haujlwm siab uas tau tsim rau kev tsim khoom PVC pipe. Nws muaj kev tswj hwm txoj kev kub zoo heev thiab kev tswj hwm rau kev tsim khoom, nws tau siv dav rau kev tsim khoom PVC pipe (xyuas li PVC drainage pipes, electrical conduits, wiring ducts thiab PVC pipe uas tsis pub siv rau kev soj ntsuam dej noj)
Rau PVC pipes (los ntawm qhov tswv yim: drainage pipes, electrical conduits, wiring ducts thiab non-drinking water supply pipes), nws tuaj yeem tshem tawm PVC decomposition thaum siv hluav taws fab ntau, tshem tawm qhov ntsuab, qhov tshuaj tawm thiab qhov tshuaj ploj. Nws kuj muaj lub tshuaj tso cua zoo rau hauv thiab rau ntawm, txhawb kom lub pipe muaj cov kab laug zoo, cov qhov ntev thiab qhov ntev muaj qhov zoo tib yam thiab muaj qhov zoo tib yam rau cov tshuaj tso cua. Nws muaj rau hauv daim ntawv los tshem tawm qhov dust pollution, nws muaj lub tshuaj tso cua zoo rau lub tshuaj tso cua thiab muaj ntau qhov zoo thiab tsis loj.