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请核对各条目的商品范围、材质与用途。排序不代表已经归类。
按重量计，单独或合计含镁、钙或铬元素超过50%，以MgO、CaO或Cr2O3表示：
事实不足，待确认待确认：当前条目与已核对资料版本或完整路径不一致，判别条件待重新核实
Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods, other than those of siliceous fossil meals or similar siliceous earths: · Containing by weight, singly or together, more than 50 percent of the elements magnesium, calcium or chromium, expressed as MgO, CaO or Cr2O3:
按重量计含氧化铝（Al2O3）、二氧化硅（SiO2）或这些产品的混合物或化合物超过50%：
Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods, other than those of siliceous fossil meals or similar siliceous earths: · Containing by weight more than 50 percent of alumina (Al2O3), of silica (SiO2) or of a mixture or compound of these products:
Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods, other than those of siliceous fossil meals or similar siliceous earths: — 其他：
Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods, other than those of siliceous fossil meals or similar siliceous earths: · Other:
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