brand: granville-phillips
model: 274025
series: 274 bayard-alpert type ionization gauges
description: granville phillips 274025 dual thoria-coated iridium replacement filament (electron bombardment degas only).
上海伟务低温真空设备有限公司
曾超
13301865030
上海浦东张江蔡伦路150号3号楼202室