... GMJ two-in-one half-molded wall units are based on single module components, by connecting itself and plug-type composite ... 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 ...