LHX - 999 is a new type, high performance additive inorganic flame retardant. This product has undergone special surface treatment, featuring good thermal stability. It can significantly increase the CTI value, greatly improve the compatibility and adhesion with plastic resins, allow for an increased filling amount, and enhance reinforcement. Meanwhile, it can be used in combination with halogens and antimony trioxide, and can replace part of the antimony trioxide. It can improve the processing fluidity of materials, enhance the coloring power of materials, reduce the specific gravity of materials, and appropriately improve the mechanical strength of materials. In flame retardant materials, it also has a certain effect on smoke suppression.