1. High Vacuum Degree: Vim tias qhov zoo ntawm lub tshuab nqus tsev nqus cov twj tso kua mis ncaj qha compress thiab tso pa tawm tshuab, lawv tuaj yeem ua tiav qib siab nqus, ua tau raws li qhov xav tau ntawm ntau qhov kev sim thiab kev tsim khoom.
2. Kev ruaj ntseg zoo: Piv nrog rau lwm hom lub tshuab nqus tsev twj tso kua mis, qhov zoo ntawm lub tshuab nqus tsev twj tso kua mis yog qhov ruaj khov thiab txhim khu kev qha thaum lub sijhawm ua haujlwm thiab tsis tshua muaj kev cuam tshuam los ntawm lwm yam.
3. Kev siv dav dav: Lub tshuab nqus tsev hloov pauv tau zoo tuaj yeem siv los rho tawm ntau yam roj thiab vapors, suav nrog cov roj corrosive, cov pa taws kub hnyiab thiab tawg, thiab yog li ntawd muaj kev siv dav hauv ntau qhov chaw.