1. The energy conservation of cavity module is integrated with the building, the thermal insulation and the building have the same life span, the high efficiency and energy conservation, and the air tightness and energy conservation effect meet the requirements of passive room. 2. The dovetail groove on the inner and outer surfaces forms a firm organic engagement with the plaster layer to prevent cracking and falling off. 3. The cavity module has good structural fire resistance, which will not shrink or fall off after burning for more than two hours, and has excellent structural stability. 4. The houses are built with cavity modules, warm in winter and cool in summer, earthquake resistant, moisture-proof, salt resistant and alkali resistant. 5. Low comprehensive cost, construction week
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