PPR yeeb nkab zoo

Hauv kev tsim kho, industrial thiab ua liaj ua teb system, kev nyab xeeb thiab kav ntev ntawm cov kav dej yog ncaj qha ntsig txog cov nqi tsim khoom thiab kev ua haujlwm ntev. PPR cev (polypropylene random copolymer yeeb nkab) tau ua tus…