Hloov Lub Tub Yees

Hloov cov raj raj raj tuaj yeem ua los ntawm ntau cov ntaub ntawv. Cov hlau yog ib qho kev xaiv uas nquag siv, tshwj xeeb tshaj yog hauv kev tsim kho thiab chaw muaj kev teeb tsa. Cov hlau hloov cov raj xa tuaj yeem tsim los ntawm cov txheej txheem zoo li kub-rolling lossis txias-ua. Kub-rolled steel raj thawv muaj lub zog zoo heev thiab haum rau kev rog tseem ceeb. Txias-tsim tau feem ntau muab cov ntau qhov ntev dua thiab qhov chaw smoother.