... , SRCC, ISO9002 certificates, solar water heater, non-pressure solar water heater CE, Solar Keymark, SRCC, ISO9002 certificates,solar water heater, non-pressure solar water heaterCharacter:1. Imported stainless steel (SS-304) tank with welded ... .8. 100% in-house manufacturing.9. Compact and Economical model suitable for small families10. 20 Years Warranty. Non-pressure Solar Water Heater