... 2..High quality products 3.Best service 4.Beautiful design Thermal Solar ComponentCertificate:CE, KEYMARK, SRCC,ISO , CCC Specification 1.Heat ... ,inside is high quality copper pipe-thickness: 1mm 2.Inner direct-flow pipe: red copper pipe dia.:35mm,thickness:1 mm ... , efficient, twin-glass6. Simplistic plug-in installation7. Minimal maintenance required Thermal Solar Component