Ntawm kev tsim khoom, lub peev xwm los tsim cov khoom siv tooj dag tuaj yeem ua qhov sib txawv loj hauv qhov zoo, kev ua tau zoo, thiab qhov tseeb ntawm cov khoom kawg.Paub txog nws zoo heev thermal thiab hluav taws xob conductivity, nrog rau nws tsis kam mus corrosion, tooj dag yog ib tug ...
Nyeem ntxiv