Raws li ib qho ntawm cov khoom siv khaws cia rau tshuaj yej, round hlau tshuaj yej tin lub thawv muaj cov yam ntxwv hauv qab no:
Circular tsim: Piv nrog square lossis lub thawv ntim khoom, lub voj voog tsim ua rau lub thawv tshuaj yej tin ntau yooj yim rau nqa. Lub voj voog tsim kuj tseem tuaj yeem zam teeb meem kev nyab xeeb los ntawm ntug hnav.
Cov khoom siv hlau: Round tshuaj yej tin thawv feem ntau yog ua los ntawm hlau. Hlau tuaj yeem cais tawm sab nraud lub teeb thiab oxygen, tiv thaiv cov tshuaj yej los ntawm kev ua qias tuaj, thiab tswj cov freshness thiab saj ntawm tshuaj yej rau qee yam.
Zoo airtightness: Lub thawv tshuaj yej tin tau zoo airtightness, thiab tsis yooj yim cuam tshuam los ntawm yam xws li ya raws thiab kab. Nyob rau tib lub sij hawm, lub airtightness kuj tiv thaiv cov aroma thiab tsw ntawm cov tshuaj yej nplooj.
Ntau yam tsim: Round tshuaj yej tin thawv muaj ntau yam kev hloov pauv thiab qhov tseem ceeb hauv cov qauv tsim, piv txwv li, ntau yam qauv, cov duab, cov qauv thiab cov ntawv yog embellished rau saum npoo. Cov ntsiab lus no tuaj yeem ua tau raws li qhov xav tau zoo nkauj ntawm cov neeg siv khoom sib txawv.