solar water heater system

caliber1) Material and thickness of frame: galvanized steel or aluminum alloy / 2.75mm 2) Insulation: imported high dense polyurethane foam / 35mm and aluminum silicate 3) Header pipe material and thickness: aluminum alloy / 1.0mm 4) Diameter and thickness of manifold: 35mm / 1.0mm 5) For both flat roof and slope roof 6) Vaccum tube: SS-C/CU selective coating 7) Caliber of manifold: 22mm Features: 1. suitable for both flat roof and slope roof2. employing sliding way for the frame, much more easier for installation, especially suitable for European-styled houses3. High efficiency: >55% and >43% in winter4. still works as normal as before even one vacuum tube destroys 5. Hailstone resistance: 25mm 6. higher effeciency,stable performance, beautiful designUniqueness:We employ sliding way to facilitate installation, this is especially designed for European styled houses. the advantage over that of other companies is that: you do not need to move the collectors if the position is not suitable to fix them,instead, you just move the screws in the sliding way to the ideal position and then fix the screws, very easy and convenient.