TOPSUN has been manufacturing PV modules with using high efficiency of PV cells. TS modules are designed for high power output by optimization of the solar cell which has excellent durability, more than 20 years of long-term reliability. Also we are manufacturing the biggest size of module in Korea with the best experience and knowhow. Our various licensed products are designed for a variety of purposes, such as housing, low-capacity modules for the cars and for electricity production in large-scale of PV station. We have been doing our best to increase product reliability and carrying out product efficiency assurance for 20years by our strict test.