1.Metallized Ceramic Electric Vacuum Tube 2.Material: 95% ,96%,99% alumina 3.High mechanical strength, High sealing strength Metallized Ceramic Electric Vacuum Tube Features: 1) Material: ≥95% alumina 2) Made by processing after fining 3) With good performance such as thermal shock resistance, metalized strengthJiabang provides custom high-purity, long-wearing alumina custom shapes with or ...