The portable EL detector is used to detect the hidden cracks, fragments, virtual welding, black film, broken grid and mixed file and other defects of photovoltaic cell modules. Shanghai BigEye Technology Co., LTD has a professional design team focused on electroluminescence testers for photovoltaic cell defect testing, and our factory is located in Suzhou, Jiangsu, China.Quality products and excellent customer service have always been the cornerstones of our success. We are ISO 9001:2015 certified.RemarksBig Eye Technology and Suzhou Zhisheng Technology are essentially the same company but serving different regions. Big Eye Technology is serving all regions except China, Suzhou Zhisheng Technology is mainly serving market of China.