Key Specification Vacuum tube: Borosilicate glass 3.3, AL-N/AL or Al N/Al
N-SS/Cu selective absorbing coatingVacuum tube size: 47x1, 500mm / 58x1, 800mmVacuum tube qty: 12 / 16 / 18 / 20/ 24 / 30 / 36 PCSInterval: 6.5cm (47x1, 500mm) / 7.5cm (58x1, 800mm)Heat insula...
Products: everpure water filter,
path solar light