Yixing Fiberlgss Co.,Ltd, The products Filament winding roving is specially designed as reinforcements for thermoset resins used in filament winding processes. The size systems of filament winding rovings are made to achieve good compatibility with polyester, vinylester and eposy resins.It is soft, smooth and better compatible with styrene for resin impregnation. The GRP is good property of water-resistance.