Development the the foundry industry's most advanced vacuum die - casting, extrusion die - casting equipment be on the market.

率先研制的铸造行业最先进的真空压铸, 挤压压铸设备也即将投放市场.

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The vacuum shut - off valve and vacuum system for high vacuum die - casting were developed in this paper.

真空截止阀的结构及真空系统对高真空压铸生产具有非常重要的影响,是真空压铸中的一大瓶颈和难点.

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