... : 500000 sets to 86 countries Compact non-pressurized solar water heater (all stainless) 1. Inner tank: 0.4mm ... Ltd1. Leading exporter: more than 500000 sets of solar water heater per year to 86 countries.2. OEM professional ... ......3. Various certificates: ISO, EN12975, EU CE, Solar Keymark, Kang-Ju, KOLAS, SABS, SRCC4. Strong warranty ... , our company have strict quality control and aftersale service.