type | purity of tungsten | application |
WAL1 | >=99.92% | filament,cathode and components for electron tubes,electrode for the gas discharge tube.etc. |
WAL2 | ||
WAL3 | >=99.92% | grid siderod,lead,support,electrode for the discharge lamp,etc. |
W1 | >=99.95% | grid siderod,support,lead and electrode,etc. |
W2 | >=99.92% |
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