Cov thawv tswj tau tsim los xyuas kom cov khoom siv tau ruaj ntseg thiab tiv thaiv nyob rau hauv ib puag ncig hnyav, tsim nyog siv rau hauv kev lag luam lossis ib puag ncig uas muaj kev phom sij.Enclosures muaj nyob rau hauv ntau yam khoom, xim thiab style, nrog rau cov yas, aluminium thiab stainless hlau kom haum rau ntau yam kev siv.