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杭州制氧机厂向美国斯图尔特·沃纳公司购买二手设备大型真空钎接炉所签的合同,已由国家对外经贸部正式批准了。
The contract signed by the Hangzhou Oxygen Plant to the US Stewart Warner Company for the purchase of large-scale vacuum brazing furnaces for used equipment has been formally approved by the Ministry of Foreign Trade and Economic Cooperation.