Non-Pressure Solar Water Heater / Heating System Solar Keymark

Product Description

1. Inner tank 0.4mm SUS304 stainless steel made in Korea.
2. Middle polyurethane made by Germany Bayer.
3. Outer tank is 0.4mm color steel.
4. Frame is 1.2mm zinc-coated.
Technical Specifications;
1. Whole glass vacuum tubes adopt super hard and silica glass;
2. Absorption rate: ≥ 93%, thermal radiation rate; ≤ 6%(100centigrade degree).
3. Temperature when exposed to sun without water: 250centigrade degree
4. Resist 25mm hail, life scale can last 20years.

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