Profile: Shenzhen Xuelai Silicone Co., Ltd. specializes in manufacturing & distributing superior quality silicone rubber. We also specialize in mold making & casting materials. Prototype mold silicone is mainly applicable for prototyping mold design, including mold making in resin art crafts, PVC plastic, alloy toy crafts, statues & cements, melting-point alloy, pad printing orientation, candles, and soap. Curing agent is a term in polymer chemistry and process engineering that refers to the toughening or hardening of a polymer material by cross-linking of polymer chains. In silicone rubber, the curing process is also called vulcanization.