Msana wamakina osawerengeka padziko lonse lapansi ndi lamba la polypropylene PP, lomwe limawonekera bwino likafika pakunyamula bwino. Zomangira izi, zomwe nthawi zambiri zimapangidwa ndi polypropylene resin, thermoplastic polima,
Pogula zinthu zonyamula katundu zamabizinesi, kuyang'ana mtundu wa lamba la polyester ndi gawo lofunikira kwambiri lomwe limakhudza mwachindunji momwe katunduyo alili otetezeka komanso ndalama zoyendetsera bizinesiyo. Chingwe chapamwamba kwambiri cha PET polyester chili ndi mphamvu zolimba zomwe zimayambira 180 mpaka 1360 kg,
Kulimba kwamphamvu kwa chingwe cha PET nthawi zambiri kumachokera ku 160 mpaka 635 kilogalamu, kutengera kukula kwake komanso mtundu wake wopanga. Kuyeza uku kumayimira mphamvu yayikulu yomwe chingwe cha polyethylene terephthalate chingapirire chisanadulidwe, ndikupangitsa kukhala chinthu chofunikira kwambiri pakugula mana.