Unsaturated polyester cob yog ib qho ntawm feem ntau siv thermosetting resins nrog cov txheej txheem zoo heev. Nws tuaj yeem kho tau ntawm chav tsev kub thiab molded nyob rau hauv ib txwm siab, nrog cov txheej txheem hloov tau yooj yim, tshwj xeeb tshaj yog tsim rau loj-scale thiab nyob rau ntawm qhov chaw tsim khoom ntawm FRP. Tom qab kho, cov resin muaj kev ua tau zoo tag nrho, qhov ntsuas kev ua tau zoo ntawm cov khoom siv qis dua li epoxy resin, tab sis zoo dua li phenolic resin. Corrosion tsis kam, hluav taws xob khoom thiab nplaim hluav taws retardant los ntawm kev xaiv cov qib tsim nyog ntawm resin kom tau raws li cov kev cai ntawm lub teeb xim resin, tuaj yeem ua rau cov khoom pob tshab. Muaj ntau ntau yam, dav yoog raws, thiab tus nqi qis.