1. Small investment, but high returns money 2. Various blocks can be made just by changeing different molds 3. Various materials can be used, such as sand, mountain flour, and cement.
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BEIJING ZHONGCAI JIANKE INSTITUTE OF SCIENCE AND TECHNOLOGY FOR BUILDING MATERIALSVIP会员第13年
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1. Small investment, but high returns money 2. Various blocks can be made just by changeing different molds 3. Various materials can be used, such as sand, mountain flour, and cement.
