Abstract IC trays are the most importance material in IC backend process. When wafer be assembled as IC, those IC will be picked into trays. Then operator will perform inspect follow the specification of customer. Finally, them will be packed & shipped as customer requirement. Tray to differentiate between 140℃ & 150℃。 The tray will be confirmed to avoid can’t running on handler equipment at new IC pilot run period .If customer create a special tray dimension, the testing house maybe change or modify their kit in testing. process which will cause increase cost. In turnkey business, assembly and testing are separated by different processes, so the standard tray are important packing material to through assembly and testing process, but them often be neglected.