Shenzhen LiangJinjing Opto-technologies Co.,Ltd is a joint-stock and hi-tech company. It produces LED display screen and integrates designing, manufacturing, marketing, after-service, R&D in LED display, LED display module, unit board and relevant accessory. Shenzhen owns a comfortable manufacture environment. And it has 7,000 square meters of the factory building with 200 skilled workers which is came into being and grew with the development of information technology. Its well ahead of the ...