The semiconductor front-end test is mainly used in the wafer processing to check whether the processing parameters of the wafer products meet the design requirements or there are defects affecting the yield after each step of the manufacturing process. The semiconductor back-end test equipment is mainly used after wafer processing to check whether the performance of the chip meets the requirements, which belongs to the electrical performance test. Semight Instrument provide integrated solutions such as wafer burn in and known good die tester, improve test efficiency and reduce test cost.