... for hand lay-up method in high-grade fiberglass.SL-191C medium viscosity, high reactivity, manufactures high mechanical strength, versatility, suitable for ... -up method of ordinary fiberglass.SL-191D moderate viscosity, high reactivity, high strength, strong adhesive properties and good toughness, for ordinary ... and toluene (benzene, toluene, xylene), etc. Solvent dilution. unsaturated polyester resin