... .SABS,ONNCCE, CoC,CCC,CE,CGC,ISO9001,ISO14001 approved 2.Three years warranty 3.7 to 15 days delivery time Solar ... .Out tank material: SUS304-2B stainless steel.Insulation: polyurethane foamVacuum tube material: borosilicate glass 3.3: AL-N-AL absorbs coating ...