Evanishment mold casting use dry sand solid, the easy box to cast, does not need any chemical additive, many casting may not need the rising head to make up shrink.
消失
使用干砂固型，易于一箱多，不需任何添加剂，很多件可以不需
冒口补缩。
Evanishment mold casting use dry sand solid, the easy box to cast, does not need any chemical additive, many casting may not need the rising head to make up shrink.
消失使用干砂固型，易于一箱多，不需任何添加剂，很多件可以不需冒口补缩。
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