Jinneng550J ndi Homopolymer PP ndi tinthu tating'onoting'ono toyera, topanda poizoni, topanda pake komanso polima wopepuka, kachulukidwe 0.9 ~ 0.91g/cm³, ndiye kachulukidwe wotsika kwambiri wa mapulasitiki wamba.Good rigidity, kuvala kukana, mkulu kuuma, mkulu kutentha zimakhudza.