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  • Publication Date: December 31, 1969
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    CN-105563289-AMay 11, 2016无锡市永亿精密铸造有限公司Efficient polishing device with good damping performance
    CN-106271320-AJanuary 04, 2017贵州永红航空机械有限责任公司Positioning welding and correcting device of ventilator cover in boiler cooler