... will be told to our reliable Customer. Copper pipe solar collector 1.CE,Solar Keymark, TUV, CCC,ISO 2.High quality, competetive price ... .Glass tube dimensions: 58mmx1800mm/ 70mmx 1700mm --------------------------------------------Why Qiruite Solar------------------------------------- Primary competitive advantages:1)CE, Solar Keymark, CCC, ISO certified2) High quality, competetive price ...