Sedment method: 3 high magnertron sputtering plation
Specific absorption: as=0.93-0.96(AM1.5)
Emission ratio: ξh=0.04-0.06(80`±5)
Vacuum tightness: P≤5.0*10-3Pa
Our company ,Haining Aoxin Solar Collector Tube Co.,Ltd , is a manufacturer of solar collectors and solar water heaters in China .We have ISO certification and some other related certifications.We always give our customers best price and good quality! We sincerely hope you will be my next business friends.