Used for spray-up, winding of mechanical continuous formed GRC and corrosion-proof FRP making. Soaked in 100 centigrade saturated Ca(HO)2 solution for 4 hours remained strength >82%.diameter diminution <0.5%.Soaked in 100 centigrade 10% NaHO solution for 1 hours, weight loss <5%(without size ).Its alkaline resistance through the “SIC” test of Berlin University in Germany, meanwhile meet the ...