split pressure solar water heater 1.CE,CCC,ISO9001 certificate 2.heat pipe 15 years warranty 3.delivery:15 days 4. ... type have CE,ISO9001,CCC, certificates, completely guarantee high quality,2. each tube inside have copper pipe for exchange hot,high ... . this product most for europe market, work wirth work station, that together complete autumatic, and can work in bad weather(-30), if one tube ...