Single-target coating tubes 8 1.CE,ISO9001,CCC 2.USD 1.6-3 per pc 3. 15Years Warranty for vacuum tube Single-target ... coating tubes 81.CE,ISO9001,CCC2.USD 1.6-3 per ... ±0.7mm & =2m Gtaded Al-N/Al solar selectuve absorbing coating Construction AbsorbingMothod to depositionDC reactive sputtering CoatingAbsorptance>91% Properties Emittance ...