1,Certification: ISO ,Solar Keymark ,SRCC,SABS.SGS 2,7 years warranty 3,Delievery 7-10days 4,High Quanlity&Reasonable Price vacuum ... tube solar water heater Certification:Have passed SRCC,CE ... ,ISO9001:2000,CCC, solar Keymark ,SABS and other certificationFeatures:1) Outer tank material: ...