... crisis together with all customers! Solar Vacuum Tube, Solar Water Heater Vacuum, Vacuum Tube details: 1) It can withstand pressure of tap water when it works2) There is ... 0. 6mpa6) Heat preservation: 72h7) Hail resistance: 25mm8) Tube standards: 14, 16, 18, 20, 24, 30, or 36 Heat Pipes with ... for packing, destination port, terms of price payment terms and quantity, then we will quote you at best net ...