First, flat-type solar collectors
1. Flat solar collector plate is a metal tube structure, high thermal efficiency, producing large amount of hot water, pressure, the resistance of air drying, water heating inside the brass, stable and reliable quality, maintenance-free, 15-year life span.
2. Antifreeze without the capacity for Guangdong, Fujian, Yunnan, Guangxi, Hainan, and so does not freeze in winter use, cost-effective.
3. Specifications: 1 ~2 square meters, cloudless sunny 55 hot water production capacity: 75-140kg / m.
4. The high absorption rate: ??s ?? 92%, low-emissivity: H ?? 10%, on average thermal efficiency d ?? 55%.

Second, all-glass vacuum tube solar collectors
1. All-glass vacuum tube solar collectors have a certain ability to antifreeze for the winter temperature of 0to -20to use the area.
2. No pressure, can not use water and air drying, or e-glass burst.
3. Specifications: The specifications for a variety of options, cloudless sunny 55 hot water production capacity: 70-130kg / m.
4. The high absorption rate: ??s ?? 90%, low-emissivity: H ?? 8%, average thermal efficiency d ?? 50%.