Qhov zoo: muaj zog thiab crashworthy, siab hardness, tsis kam mus rau organic solvents thiab acid thiab alkali corrosion, high-temperature kuj
Disadvantages: loj
Piv nrog rau lwm yam yas, PP khoom yog bulkier, tab sis nws yog resistant rau ntau yam tshuaj thiab kub kub.Tsis tas li ntawd, qhov kev sib tsoo yog qhov zoo dua, thiab kev tiv thaiv ntawm lub nra yog txhim kho.