1.sorate sakht shdane rezine fenol bechi bastegi dare?
2.chera tu polymerizasion kataliste acdo baz har2 ghabele stefade ast?
3.natayeje haselaz baresie halaliate rezine tashkil shode ra tozi bede?
4.noghteye zhelasion chie?chera kontorolesh tu sanat moheme?