Cov tshuaj yas yas kuj yog ib hom ntim cov fwj, tab sis hom tshuaj lom neeg no feem ntau yog siv rau ntim thiab thauj qee yam khoom siv tshuaj lom neeg.
Cov yas yas yas muaj qhov tseem ceeb polyethylene (PE) ib zaug molding tsis muaj nqaws, cuam tshuam tsis kam, laus tiv taus, lub cev hnyav, tsis muaj xau, kua qaub thiab alkali tsis kam, thiab lub neej ntev. Nws yog qhov tseeb vim tias cov yam ntxwv no uas lawv tuaj yeem siv rau nkoj cov khoom lag luam tshuaj lom neeg.
https://www.fhpails.com/
