... waterproof 3,high Compressive Resistance 4,Sound insulation GMJ two-in-one half-molded wall units are based on single module ... convenient, time and labor saving. Features:1, GM two-in-one half-molded wall units adopt the way of half split ... sound insulation in the fields of industrial architectures, residential houses, schools, hospitals, hotels, supermarkets Constructions/GMJ two-in-one half-molded ...