In-line inspection(IPQC). Are performed by QC at every operation. according to QC flow chart. Producing line 100% function test. Besides. Worker’s self-quality control on producing line. On the line , every processing step with inspection equipment, only by pass the test, can products pass over to next assemble position. Worker is not just a worker, also is a inspector. If find problem, equipment will tell them where is problem. Beside add QC work position the assembly line. In line, inspection (IPQC) are performed by QC, at every operation process, regular route inspection on time and seriously implement daily check. include production line and operating safety. SMT processing line. With automatic optical inspection machine to control quality. QC staff visual inspection every pc board, according to working operation instruction and specified index and norm. closed loop control system.