In the LED chip package, there is a process of expanding the wafer to uniformly spread the entire LED wafer film, so that the LED chips attached to the surface of the film are closely spaced to facilitate the fixing of the wafer. At this time, the crystal chip storage is also very important. Generally, many enterprises use the LED chip cassette wafer to store and revolve it,to ensure that the product has just expanded the wafer from external damage, and can improve the production efficiency of the workshop.