solar geyser Certificate: SRCC, Solar Keymark, CE and ISO9001 solar geyserOuter tank: SUS304-2B stainless steel or colourful ... water temperatures. Adopts the international advanced film-coating technology, solar thermal conversion rates extremely high, absorbing heat even if the ... automatically ,controlling automatically.Certificate: ISO,CE,SGS, SRCC, Solar Keymark 200L low pressure colourful steel ...