The indoor LED display of LEDER is used in indoor for normal lighting occasion. The indoor LED display of LEDER is combined the characters of photoelectron, computer, engineering. And it is controlled by modules and can be combined liberty, it easy for instalation and repairing. It has the features of abundance, lifelikeness, responding fast, low failure rate, and is used for government, airdrome, railway bus station, offices, factories.station,