Tinplate cov ntaub ntawv luam tawm hlau tuaj yeem: qib zaub mov feem ntau yog siv rau semi-khoom, kua dej haus, khoom noj khoom haus, cov khoom ntim hauv kaus poom, cov khoom siv no thaiv, roj tsis kam, dej-pov thawj, shading, aroma preservation yog zoo heev, belongs rau cov zaub mov ntim kev lag luam indispensable.
