Thaum polyethylene siv quav ciab rau dej-raws li tus number case, nws feem ntau yog siv los ua tshuaj pleev ib ce los ntawm kev ntxiv emulsifier los yog disperse nws mus rau hauv acrylic resin.Oxidized polyethylene wax txhim kho nws cov hydrophilicity rau qee qhov.Ntxiv wax lotion rau dej-raws li number case tuaj yeem txo qhov ntev ntawm tus number case taub hau hauv pob ...