Professional PCB tester provides 512 and 1024 pins. 9330 models collocate with different customized manual /pneumatic fixtures. The minimum resistance can be measured to 1mΩ. The mechanical structure with double cylinder press to increase the stability of the testing. The existing applied industry field is the high-tech 3C products. For instance, the smart phone and the wearable electronics (membrane keyboard/membrane switch) need precision quality testing of PCB/FPCB. The high security requirements of PCB in central control panels as well as the various sensor parts of the car need high precise FPCB testing equipment for quality control.