Heating System: Thermosyphon (Passive) Housing Material Aluminium Alloy Certification CE, SRCC, SOLAR KEYMARK 1.SRCC,Solar Keymark/ En-12975,CE SGS, 2.100000Btu/ ... Long life span and easy operation 4. This type of solar water heater can work in high pressure 5. It uses the heat ... make you bathe more comfortable ADVANTAGES:1. This type of solar water heater can work in high pressure 2. It uses the heat ...