HeptaChroma is active in the area of renewable energy, and has a leading position in scientific research, manufacturing, sale and service of DSC in China. We pay high attention all the time to the R&D of hi-tech products based on the continual technical innovation by cooperating with Dalian University of Technology. We own a professional technical team composed of a number of doctors, masters and senior engineers with years of experiences in the field of DSC research, and two of them have done research work concerning DSC for several years at abroad. So far, we have applied for 1 international and 10 Chinese patents, and five of them have been warranted. All of these patents with independent intellectual property rights cover the most of key parts of the production of dye-sensitized solar cell and FTO conductive glass.