... 1) CE, CCC, ISO9001: 2000, CNAL2) Good price and quality 3) Prompt delivery 4) Environmental Protection 5) OEM order is accepted ... tank material(460mm-480mm diameter,0.35mm-0.4mm thickness)3.50mm thickness insulation with polyuthane form.4.galvanized steel(stainless more ... air safe value9.Heat Insulation Layer:imported polyurethane(Bayer,Germany),50mm thickness10.working pressure:1.0 MPa(10 bars) Solar ...