sales and service for integrated high-tech enterprise, specializing in the production and operation of LED optoelectronic devices. The main products include: multi-standard (indoor, semi-outdoor, outdoor) monochrome, dual-color, full-color dot-matrix module (cell plate), digital control, pixel tubes, light-emitting diode. Products are widely used in military, communications, enterprises, institutions, advertising, household appliances, transportation and other fields.