Shanghai World Expo will display as a special sponsor, BDO Runda Group Retop Display Technology Co., Ltd. for the April 30 opening night of the Expo show special custom video production 10,000 m2 giant LED screen, worth up to 100 million yuan This is not only far the world's largest LED screen, and the structure to achieve a number of technology innovation, the opening ceremony of the Expo outdoor performance worthy of attention.