Kev txwv cov khoom siv raw hauv kev lag luam polyethylene ntawm lub tshuab nqus tsev vacuum
Dec 09, 2022
Tso lus
Tus nqi rov ua dua ntawm cov pov tseg hauv tsev hauv kuv lub tebchaws tseem nyob qis qis, thiab kev rov ua dua tshiab tau ua tiav hauv ib lub tsev, thiab cov khoom zoo thiab cov khoom tsis ruaj khov. Raws li cov neeg siv khoom loj ntawm cov khoom yas, kuv lub teb chaws txoj kev vam khom ntawm cov khoom siv polyethylene pov tseg tseem tseem nyob siab dua 30 feem pua, yog li kev lag luam tseem tab tom ntsib kev txwv ntawm cov khoom siv raw, thiab kev tsim kho ntawm cov khoom siv rov ua dua tshiab yog qhov xav tau sai.
