Kev khaws cia thiab thauj cov khoom stamped tseem yuav tsum tau saib xyuas. Stamped qhov chaw feem ntau xav tau kev ntsuas xws li tiv thaiv xeb, tiv thaiv ya raws, thiab tiv thaiv kev cuam tshuam.
Kev tiv thaiv xeb tuaj yeem ua tiav los ntawm txoj kev xws li roj thiab ntim khoom. Kev tiv thaiv noo noo yuav tsum ua kom lub tsev khaws khoom kom qhuav thiab zoo -ventilated. Kev tiv thaiv kev cuam tshuam yuav tsum tau siv cov khoom ntim tsim nyog thiab cov txheej txheem los tiv thaiv kev puas tsuaj rau cov khoom thaum lub sijhawm thauj mus los.
Stamped qhov chaw yuav tsum tau muab sib dhos kom zoo thiab ruaj khov kom tiv thaiv lawv los ntawm kev sib tsoo thiab ua rau puas tsuaj.
