solar collector tube 1.high pressure withstanding ability 2.high absorption efficiency 3.low heat loss 4.stable and ageing-resistant coating
Dual target solar evacuated tube Solar evacuated tube 1.coating material:SS-C/Cu 2.certificate:CE ISO9001 TS 3.OEM is available 5.testing machine:UV 3600
Solar glass vacuum tube Solar vacuum tubeGlass mmaterial: borosilicate 3.3Coating tstructure: SS-ALNx/CuCE certificate