Adopting the advanced melting furnace,shaping,annealing,cold-punch glass devices and modernized digital controlled means,mixing together over 40 years experience of the traditional hand operation skills,we mass-produce, the DM-305 and DM-308 electronic vacuum glass which can easily seal with kovar(4J29),molybdenum.

   Feature:
    fine outline and gas tightness;
    good heat-resistance and dielectric strength;
    low hydrolysis;
    little devitrification and dielectric loss;
    high annealing temperature.

  Specification(DM-308):
    Coefficient of expansion:(48.0±1)×10-7/℃
    Softening point:705±10℃
    Heat stability:200℃