Lub hauv paus ntsiab lus ntawm Hygiene.
Cov tais diav hauv chav ua noj yuav tsum tiv thaiv kom tsis txhob kis kab mob thiab tiv thaiv kab laum, nas, ntsaum, thiab lwm yam kab tsuag los ntawm cov khoom noj kom huv si kom ntseeg tau tias tag nrho cov khoom siv zoo.
Txoj Cai ntawm Kev Tiv Thaiv Hluav Taws.
Lub chav ua noj tsuas yog thaj chaw hauv lub tsev niaj hnub uas qhib hluav taws siv. Qhov hluav taws kub tsis kam thiab nplaim taws retardancy ntawm cov ntaub ntawv txiav txim siab txog kev nyab xeeb ntawm cov tais diav thiab txawm tias tsev neeg. Qhov hluav taws kub tsis kam ntawm txheej txheej ntawm cov tais diav yog qhov tseem ceeb rau kev xaiv.
Txoj Cai ntawm Kev Yooj Yim.
Kev ua haujlwm hauv chav ua noj xav tau kev ua haujlwm zoo. Yog li ntawd, kev npaj cov tais diav raws li kev ua haujlwm kom raug yog qhov tseem ceeb rau kev yooj yim ntawm kev siv yav tom ntej.
Txoj Cai ntawm Kev Zoo Nkauj.
Cov khoom siv hauv chav ua noj yuav tsum muaj zog tiv thaiv - paug thiab yooj yim- rau - huv si, uas yuav tsum muaj cov khoom siv saum npoo kom muaj kev tiv thaiv zoo rau cov roj stains thiab roj.
Raws li cov lus hais mus, "Ib tug txawj craftsman yuav tsum xub sharpen nws cov cuab yeej." Txhawm rau npaj cov zaub mov qab, chav ua noj huv thiab ua haujlwm tau zoo yog qhov tseem ceeb. Kev siv cov khoom siv hauv chav ua noj siab heev pab tswj cov cua sov thiab ceev thaum ua noj, ua rau lub rooj puv ntawm cov tais diav zoo heev. Cov tsev neeg feem ntau siv qhov cub yooj yim ...
