Comparing to Al-N-Al vacuum tube, it has advantages in cold area as following:
a. Absorbance: 12% higher.
b. Emission Ration: 30-49% lower.
c. In alpine area, copper ions emission ration is lower than that of aluminum ion. So it could work properly even circumstance temp. is lower than -30Deg C.
d. Stainless steel ion has performance of high temp. resistant, anti-stagnation temp. coating will not decay or get aging or disappears.
Dia. 47 with length of 1500mm.
Dia. 58 with length of 1500mm.
Dia. 58 with length of 1600mm.