High performance hollow glass microsphere  are high-strength, low-density additives made from water resistant and chemically-stable soda-lime-borosilicate glass & hollow spherical powdered ultralight inorganic nonmetallic materials.And it is a versatile and new materials developed in recent years. It will be the new composite mainstream materials at twenty-first century. Its true density is 0.15-0.60g/cm3 with 2-130μm in partcle diameter. It owns features...