土状石墨分类:
1.土状石墨
2.耐火材料

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耐火材料
Rafractory Material
1.高铝质耐火砖
High-Aluminum Refractory Bricks
3.高铝质衬砖
High-Aluminum Lining Bricks
2.镁碳砖
Magnesia Carbon Bricks
4.异型高铝砖
Special-shaped High-Aluminum Bricks