HX-400 is styrene acrylic copolymer emulsion made from acrylate and monomeric substance with special function, mainly used in the production of coatings with high elasticity and two component cement-based polymer waterproof coatings which is called JS coating in China. It’s also used as adhesive in building mortar to improve the strength and flexibility of concrete and thermal insulation mortar which is used in buildings to improve the thermal insulating property and fire performance of buildings.