Jining Keli Opto-electronic Technology Co.,Ltd. belongs to Laser Research Institute of Shandong Academy of Sciences. We have been dedicated to research, promotion and application of photo-electronic protecting technology for more than 20 years. The brand SDKELI is a professional manufacturer of photo-electronic safety protection products, and the leader of photo-electronic safety technology in China. It is the leader unit of Electro-sensitive Equipment of National Technical Committee on Electrical Systems of Industrial Machinery of Standardization Administration.