The iron powder quality is ensured through tunnel kiln reduction and second reduction by using iron scale of high grade as raw material.
以优质铁鳞为原料，加强隧道窑和二次精还原工艺技术管理，确保铁粉质量。
The iron powder quality is ensured through tunnel kiln reduction and second reduction by using iron scale of high grade as raw material.
以优质铁鳞为原料，加强隧道窑和二次精还原工艺技术管理，确保铁粉质量。
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