S & a impex offers cross- linking agent for various polymers, super fx repellan 650. S & a impex offers value-added products and services like speciality chemicals and related auxiliaries. The cross- linking agent for various polymers is formulated on blocked isocyanate compound. It offers durability to different kinds of finishing polymers like acrylic resin, fluorocarbon, polyurethane and polyvinyl alcohol. It also helps in generating cross linking reaction during the heat treatment.