Coil rau tes, tseem hu ua collated rau tes, yog ib hom fastener dav siv hauv kev tsim kho thiab kho dua tshiab. Tsis zoo li cov ntsia hlau xoob ib txwm muaj, cov ntsia hlau coil tau ua kom zoo nkauj thiab txuas nrog ua ke siv cov txheej txheem coil. Lawv feem ntau tuav ua ke nrog yas, ntawv daim kab xev, los yog hlau hlau, ...
Nyeem ntxiv