Yas kegs

Cov thoob yas yog cov thoob dej haus ua los ntawm polyethylene rau kev muag thiab khaws cov dej haus xws li npias, cider, cawv. Lawv cov txiaj ntsig tseem ceeb yog tus nqi qis, qhov hnyav tsawg, yooj yim khaws cia thiab thauj mus los, thiab siv yooj yim. Cov thoob yas feem ntau tsuas yog siv ib zaug xwb vim tias nws tsis tuaj yeem ntxuav lawv los ntawm tshuaj lom neeg.