1)1.2mm stainless steel internal tank
2)0.5mm stainless steel external tank
3)5 cm polyurethane foam insulation
4)16 pics of evacuated collector tubes with one layer absorption coating
5)Storage water tank:160 lliters
6)Bracket:1.5mm stainless steel or aluminum
7)safty valve
8)Certificate:CE and ISO9001
9)1.5KW electric heater booster
10)working pressure 6bar,test pressure 12bars
11)Seal and etc.