电真空器件用无氧铜管材
Oxygen free copper tube for vacuum electron devices

2013-10-17

电真空器件用无氧铜板和带
Oxygen-free copper sheets and strips for vacuum electron devices

2014-12-05

전자 부품용 무산소 구리의 판, 띠, 이음매 없는 관, 봉 및 선
无氧铜片材 板材 带材 无缝管 线材 棒材和线材的电子器件

2019-12-31

Oxygen free copper sheets, plates, strips, seamless pipes and tubes, rods, bars and wires for electron devices
电子设备用无氧铜片、板材、带材、无缝管和管、棒、棒和线

2012-01-01

Oxygen free copper sheets, plates, strips, seamless pipes and tubes, rods, bars and wires for electron devices
电子设备用无氧铜片、板材、带材、无缝管和管、棒、棒和线

2006-01-01