- good tungsten wire
- 2016-10-31 21:01
- Tungsten wire is used as vacuum material,cathode for emitting tube,high temperature electrodes,many specifications are s
- Leybold Filament For Promotion
- 2016-10-26 21:13
- Leybold Filament was made of selected high-quality material of tungstenLeybold Filament can be use in leybold equip