10 units of vacuum tubes (or evacuated tube) for solar hot water
Length of tube:500mm, tube diameter: 58mm
Application:they can used for the demo solar collector, demo solar water heater, or other DIY solar hot water heating system. Get the energy from the SUN.
Remark: the tubes are fragile, we will ship to you via Express.
if tubes broken, we will ship to you again or refund to you, no worries
