Kev kub siab ua haujlwm: Qee cov khoom tau ntim rau ntawm qhov kub thiab txias, lossis yuav tsum tau ua kom tsis muaj menyuam tom qab ntim khoom. Lub sijhawm no, lub sealing zaj duab xis thiab cov cab kuj yuav tsum muaj cov yam ntxwv ntawm qhov kub thiab txias, thiab qhov kub siab tshaj plaws yog <135 ℃.