On September 2009, CENTURY SUN was issued solarkeymark certificate for its CENTURYSUN solar collector.Now CENTURY SUN becomes the first Chinese company who owns solarkeymark certificate diameter 58mm diameter collector.

Keymark products test was done by Institut für Solare Energiesysteme ISE which is one of the leading European solar products tester and certificate issue body. The test report shows that CS solar collector has the highest efficiency among collectors made in china.