- Solar Geysers with Gradual Absorption Coating
- 2017-09-27 22:27
- Model Number: QBJ47/1500-18-1 Brand Name: chemetals Key Specifications/Special Features: Vacuum tube:Material: borosilicate glass 3.3Thickness: 1.6-1.8mmWeight: 2kg/pieceCoating: Al/N-Al, gradual absorption coatingAbsorption: ≥90, ±2%Emission: ≤...