Thermal Solar Component 1.KEYMARK,SRCC,CE,ISO,CCC 2..High quality products 3.Best service 4.Beautiful design Thermal ... pipe: red copper pipe dia.:35mm,thickness:1 mm 3.Insulating layer: Polyurethane or rockwool ,thickness 30mm 4. ... to delivery the heat energy, it can work rapidly.3. Because of no water in the vacuum tube, ... plug-in installation7. Minimal maintenance required Thermal Solar Component