This product is the industry's first rental screen with dual power supply and dual chip design. The dual power supply and dual chip design solves the problem of the screen's stagnation and discontinuity. The power supply and the chip are both up and down compatible, and can be safely replaced in without interrupting working condition display. The power supply or chip replacing mechanism makes the screen display “0” fault. This product reserves the design of splicing right angle and square column shape. The left and right fast-arc lock can meet the needs of multiple angles. It is a highly compatible product for rental market.