448
253
502
380
261
428
454
332
308
503
428
456
460
303
414
502
514
434
497
393
330
417
260
469
407
296
330
256
511
431
484
230
- Sgj Vacuum Alumina Metallized Ceramic, Brazing Assembly, Feedthrough, Isolator, Electrodes, Connector, Break, Insulator, Filter, Electron Beam, Arc Envelope
355
237
241