Lub hnab ntshiab pem hauv ntej aluminium ntawv ci yog ua los ntawm cov khoom siv hlau zoo.Lub ci ntsa iab thiab sab pob tshab tsim yog nrov heev hauv kev ua lag luam.Nws muaj cov dej tsis zoo, tsis hnov tsw, tsis muaj dej pov thawj, thiab me nyuam pov thawj.Siv dav hauv paj qhuav, ci, txiv hmab txiv ntoo qhuav, khoom noj txom ncauj, tshuaj ntsuab, khoom qab zib, thiab lwm yam.