Puas yuav PPR cov kav dej khov?

Cov kav dej yuav khov, tsuav yog qhov kub hauv cheeb tsam qis txaus thiab tsis muaj kev tiv thaiv kev tiv thaiv kev ruaj ntseg, cov dej hauv cov kav dej yuav khov. Thaum dej khov, nws yuav nthuav dav, thiab cov kav hlau dav dav xws li cov kav dej galvanized, vim lawv cov khoom tensile tsis zoo ntawm qhov kub thiab txias, feem ntau yog khov thiab tawg, uas cuam tshuam rau lawv siv thiab ua rau muaj xwm txheej. PPR cov yeeb nkab dej yog ib feem ntawm cov yas, uas muaj peev xwm hloov hluav taws xob tsis zoo thiab muaj peev xwm ua kom tsis muaj zog. Piv nrog rau cov kav hlau hlau, nws yog qhov nyuaj rau khov, thiab thaum khov, nws tsis yooj yim rau khov vim nws lub zog tensile. PPR yog cov ntawv luv ntawm lus Askiv random copolymer polypropylene (Polypropylene-Random). Feem ntau hu ua peb hom polypropylene.