Flat panel solar Collector Copper aluminium positive Electrode Oxidation paint,material of inner tank stainless steel SUS304

model	material of out tank	material of inner tank	material of frame	Flat-plate solar Collector	capacity	length of the copper coil	collection device area
IDH-150	Color Steel Plate,thickness:0.4mm	stainless steel SUS304-2B; Thickness:0.4mm;	Aluminum alloy Thickness:2.0mm	Copper and aluminium flat plate,positive Electrode Oxidation paint	150L	20m	2m2
IDH-200					200L	25m	3m2
IDH-250					250L	28m	4m2
IDH-300					300L	30m	4m2

Indirect non-pressurized flat panel solar water heater