Product Details  Shorter lead time, longer life span. Guarantee of quantity and quality 10-15 working days delivery time Features:  Reliable,Efficient,Two-layer Vacuum tube  DIY installation Economical  FlexibleVertically or horizontally positioned  Suitable for domestic, large commercial or industrial applications Part 1:Heat Pipe or U Pipe Collector Part 2: High pressurized water tank Part 3: Working Station Various models(double coil/single coil) are available, please contact for more details. The most important things are our short lead time and competitive price and quality. Interested? Please do not hesitate to contact me! Ally Qin Cell: 0086 1340 169 1567