Non-pollution, effectively protect the environment, energy saving, extremely low use cost at ordinary times. Once invested, you will benefit from it forever. You may withdraw the cost within 2 or 3 years
7.advanced technology:Our company use 3 target magnetron sputtering plating technology,which introduce from Germany and also called interferometer coating technology.
6.Vacuum degree
solar energy water heater solar collector : efficiently aborsbtance |