Ntau lub tuam txhab PVC yas cov khoom lag luam tau mloog zoo rau qhov teeb meem ntawm "kev txiav txim ib puag ncig tus phooj ywg PVC yas pellets", ntshai tias PVC yas pellets lawv xaj yuav tsis ua raws li cov qauv kev tiv thaiv ib puag ncig, uas yuav cuam tshuam rau cov khoom. Yuav kom daws tau tag nrho cov teeb meem ntawm "ib puag ncig tus phooj ywg PVC yas pellets xaj", cov neeg koom tes yuav tsum tau ua tib zoo mloog cov ntsiab lus hauv qab no: 1. Saib ntawm qhov tsim nyog. Tsuas yog cov tuam txhab tsim nyog yuav tsum muaj kev txhawb nqa muaj zog los tsim cov khoom zoo. 2. Saib ntawm lub zog thiab kev siv tshuab, tsuas yog lub zog muaj zog thev naus laus zis muaj peev xwm txhim kho muaj zog, thiab tuaj yeem ua tiav ntau txoj kev loj hlob raws li qhov sib txawv ntawm cov neeg siv khoom, kom ua tau raws li qhov sib txawv ntawm cov neeg siv khoom rau cov khoom. 3. Saib ntawm qhov ntsuas thiab kev txhim kho keeb kwm, tsuas yog ib lub tuam txhab nrog cov nplai thiab cov cuab yeej cuab tam tuaj yeem tau txais kev tuav pov hwm hauv kev lag luam thiab nqa cov khoom zoo thiab cov kev pabcuam mus sij hawm ntev.
