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中航工业传来捷报，日产300万口罩机研发成功，世界目光转向东方
肺炎疫情让口罩成为了重要物资，面临供应不足的困境，为解决口罩问题，中航工业变身抗疫先锋，最近中航工业传来捷报，日产300万全自动口罩机研发成功，让世界目光转向了东方，中国研制的先进设备引发全世界注目，
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