... reactivity, manufactures high mechanical strength, versatility, suitable for hand lay-up method of ordinary fiberglass.SL-191D ... lower exothermic peak temperature, slow curing, low shrinkage, good mechanical properties, suitable for thermal curing of FRP pultruded sheet products, ... pre for thixotropic resin, toughness, high strength, thixotropic good, does not flow glue, mainly used in vertical glass ...