... 0.4mm inner tank,stainless steel SUS304-2B,thickness:1.2-1.5mm,normal working pressure:6bar,test pressure:12bar3. ... pressure:6bar,test pressure:12baradvantages:1.can be operated completely automatic if connect with intelligent controller.2.Simple structure, ... without sunshine.3.Superior heat preservation ensured by one-off molding polyurethane foam with thickness 50-65mm,4.Suitable for campong area ...