Khaws rau hauv qhov chaw txias, qhuav thiab zoo-ventilated warehouse.
Khaws kom deb ntawm qhov hluav taws kub thiab cua sov.
Tsis txhob tshav ntuj ncaj qha.
Lub pob yog kaw.
Nws yuav tsum tau muab cais tawm ntawm cov kua qaub thiab cov tshuaj uas siv tau, thiab kev sib xyaw cia yuav tsum tsis txhob zam.
Qhov chaw cia khoom yuav tsum tau nruab nrog cov ntaub ntawv tsim nyog kom muaj cov xau.
