1. Cov hlau, roj stains thiab sundries yuav tsum tsis txhob muab sib xyaw rau hauv lub raj mis.
2. Cov yeeb nkab xov saum DN65 yuav tsum tau coated ntawm ob sab ntawm sab hauv thiab sab nrauv, txwv tsis pub qee cov pob qij txha tuaj yeem xau.
3. Lub hauv paus kua nplaum los ntawm cov yeeb nkab cov hniav yuav tsis khov rau lub sij hawm ntev vim kev sib cuag nrog oxygen.
4. Yog tias nws nyuaj rau disassemble nrog cov yeeb nkab ciaj ntswj. Cov phom roj tuaj yeem siv rau cua sov thiab disassemble.
5. Cov khoom no muaj lub zog nruab nrab hom thiab siab zog hom. Thov saib cov lus piav qhia ntawm lub raj mis ntim kom paub meej.
Cov khoom siv raw siv feem ntau yog siv los kaw cov raj xa dej, thiab tsis muaj qhov sib txawv ntawm qhov zoo thiab qhov tsis zoo. Qee cov ntaub ntawv siv tau yooj yim yog pob tshab thiab hloov tau, thaum cov khoom siv raw siv yog dawb thiab nkig. Qee tus neeg nyiam siv cov khoom zoo li ntawd.