1. Yog tias qhov xau dej ntawm pvc yeeb nkab tsis hnyav heev thiab tsuas yog tawg me ntsis tshwm sim, koj tuaj yeem siv pvc kua nplaum los kho qhov dej xau. Txawm li cas los xij, thaum dej siab yog loj tom qab cov dej xau tau tsim kho, tej zaum yuav muaj dej ntws tawm, yog li cov tshuaj zoo tshaj plaws yog hloov cov pvc tshiab yeeb nkab.
2. Yog tias dej ntws tawm ntawm cov yeeb nkab pvc yog qhov teeb meem loj, koj tuaj yeem txiav tawm qhov tawg ntawm cov yeeb nkab pvc, tom qab ntawd tshem ob qho kawg ntawm cov yeeb nkab pvc los ntawm kev sib koom tes, thiab thov siv cov kua nplaum pvc ntawm sab hauv cov yeeb nkab phab ntsa ntawm ob qho kawg, thiab txuas lub tshiab pvc yeeb nkab nrog Kev sib tshuam yog sib txuas, tom qab zawm txoj kev sib koom tes, thov pvc kua nplaum rau sab nraud yas yeeb nkab ntawm pvc yeeb nkab. Tom qab cov kua nplaum tau ua tiav tag, cov dej tuaj yeem siv tau coj los sim.
3. Yog tias muaj teeb meem dej tsis sib haum ntawm qhov sib txuas ntawm cov kav dej pvc, nws nyuaj heev los kho qhov xau. Txhawm rau kom ua tiav qhov kev kho kom zoo dua qub, koj yuav tsum hu rau tus kws tshaj lij txhawm rau kho cov neeg ua haujlwm hauv lub sijhawm kom cia lawv tuaj rau ntawm cov yeeb nkab pvc los kho qhov xau, yog li toavoid tom qab siv cov txheej txheem ntawm cov teeb meem ntxiv.