... bathing no.:3-4, preservation time: 72 hours, certification:CE,ISO9001-2008,SRCC,Solar Keymark,UL,SABS offer OEM Name: Non ... material: stainless steel,diameter: 420, 455, 460, 470, 480, 500.d) Insulation layer: high density polyurethane foaming, thickness: 50-60mme ... material: colored steel,diameter: 420, 455, 460, 470, 480, 500.d) Insulation layer: high density polyurethane foaming, thickness: 50-60mm ...