solar thermal  collector panel,solar water heating system,heat collector system:

Tank Materials:
Inner tank: SUS 304
Inner tank materials: 1.2mm
Outer tank: Colored steel
Outer tank thickness: 0.37mm
Insulation: Polyurethane

Manifold: copper

Outer connectors: aluminium alloy or color steel
Heat exchanger: Copper coil
Frame: Steel coated with the zinc
Frame thickness: 1.5mm
Advantage: Get the instant and healthy hot water at any time.
Pressure operation.

Heat pipe solar collector can be installed on roof,it looks beautiful from outside.

And pressure tank can be installed indoors,heat loss is small for cold countries.