Our Flagship Products are the unmanned installing type LED lamp, safe and easy to be installed on ground, no need the ladder. To the traditional lamp, we have to call the electrician to install the lamp with much cost, the electrician have to use the ladder or aerial work platform, the maintenance cost is much, the risk is high. Especially in multi-storey halls, the ladder is not long enough, the aerial work platform is difficult to load up flfloors. According to these matters and our new type lamp, we researched the different unmanned installing bars. The manual motive bar is working for common height ceiling, semi-automatic bar for middle height ceiling, fully automatic bar for super height ceiling. So now the maintenance become very safe,easy and timely. And the cost and risk are very low!