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["采购内容"]
["序号","材料名称","规格型号","备注"]
[1,"商品混凝土","c25"]
[2,"商品混凝土","c30"]
[3,"商品混凝土","c30p10"]
[4,"商品混凝土","ca35"]
[5,"商品混凝土","c30超流态"]
[6,"商品混凝土","c35"]
[7,"商品混凝土","c30P8"]
[8,"商品混凝土","c20"]