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Ⅰ、树脂自硬砂工艺在我国的应用和发展Ⅱ、国外树脂砂应用近况附件:国内树脂自硬砂工艺使用情况的调查报告
Ⅰ, Application and Development of Resin Hard Sand Technology in China Ⅱ. Application Situation of Resin Sand in Foreign Countries Attachment: Investigation Report on the Use of Domestic Resin Hard Sand Technology