Cov hmuv cawv yog lub npias thoob qhov hluav taws xob valve, siv rau lub thoob npias, ua ke nrog lub thoob caj dab xov foob, thiab nrog tib hom filling kab thiab dispenser,
Hauv lub vev xaib no, cov khoom lag luam tau meej thiab nplua nuj, Kuv tuaj yeem nrhiav cov khoom kuv xav tau sai thiab yooj yim, qhov no yog qhov zoo heev!
Tus neeg muag khoom ua raws li txoj kev xav ntawm "zoo qhov yooj yim, ntseeg thawj thiab tswj cov qib siab" kom lawv tuaj yeem ua kom ntseeg tau cov khoom lag luam txhim khu kev qha thiab cov neeg siv khoom ruaj khov.