PPH yeeb nkab yog cov khoom siv polypropylene txhim kho, uas yog homopolypropylene nrog qhov hnyav molecular thiab qis qis qis. Nws muaj cov qauv siv lead ua zoo tom qab hloov kho, thiab tsis yog tsuas yog muaj tshuaj lom neeg zoo heev thiab kub ua haujlwm. Raws li kev nkag siab zoo, nws kuj muaj kev cuam tshuam zoo heev ntawm qhov kub thiab txias. Ua kom muaj zog hydrostatic, txhim kho cov tshuaj tiv thaiv, dav siv hauv kev lag luam thiab pej xeem lub tsev kub thiab dej txias, cov cua sov hauv pem teb, cov dej ntshiab huv, cov dej kub ncig, cov kav dej compressed, cov kav dej ntau lawm, thiab lwm yam. .
