SOLAR KEY MARK and SRCC Certificate 1) Pipeline is made of all red copper and conducted by heat transfer medium liquid 2) Water doesn't flow in the vacuum tubes and is operated when confined 3) Aluminum alloy mould material of high strength with airflow design 4) It is furnished in good style 5) Tank is equipped with electric water heater setting, automatic temperature controller 6) With increased anode magnesium bar stick to prevent furring. 7) The insulating layer uses polyurethane bulk bubble 8) It successfully carries out installation of separation according to fabricatingyard