Keretse niba bisobanuwe ukundi, ibicuruzwa bidasubirwaho Polyester resin bigomba kubikwa mukarere kama, gakonje kandi heza. Ikoreshwa neza mugihe cyamezi 12 nyuma yitariki yo gukora. Polyester idateganijwe muri resiti ya polyester igomba kuguma mubipaki byabo byumwimerere kugeza mbere yo gukoreshwa. Ibicuruzwa bidasubirwaho Polyester resin bibereye gutangwa ninzira yubwato, gari ya moshi, cyangwa ikamyo.