Yongkang Dongrun Casting Industry&Trade Co,.Ltd
Aluminum Sand Casting,Gravity Die Casting,Aluminum Die Casting
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E-Mail:dongrun@dongruncasting.com


Description
1. AS usually, the material is resin sand, the "resin sand" consists of sand and synthetic binders cured thermally or chemically. The resin sand becomes very hard when it is heated by electricity.