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开发混凝土多排孔砌块、混凝土多孔砖等系列产品是墙材改革的需要。文中三大系列产品的开发成功 ,奠定了该类产品在墙体材料中的重要地位
Development of concrete multi-row block, concrete brick and other products is the brick wall of the reform needs. The successful development of the three series of products in the article lays the important position of such products in wall materials