Nkag siab txog PE hnab yas: Ib puag ncig phooj ywg ntim cov kev daws teeb meem Hauv lub ntiaj teb ntawm kev ntim khoom niaj hnub no, PE hnab yas sawv tawm raws li kev daws teeb meem ntau yam thiab ib puag ncig. PE, lossis polyethylene, yog cov khoom siv dav siv polymer hauv ntau qhov kev lag luam, paub txog nws cov kav ntev, flexib ...
Nyeem ntxiv