Features: 1). Vacuum Tube: Pyrex Glass, Magnetron Sputtering Aluminum Nitride Coating. We Have Two Models: Common Tube; 3.3 High Boron Silicon Glass Tube 2).vacuum Tube Standards: 15/18/20/24/30/36 Tubes With 47mm (diameter) And 1.5m Length/58mm(di ...Read More



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 EXPIRED ON: 04-12-2008



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