During Production Inspection (DUPRO) is performed at the stage of 30%- 50% goods finished and packed into export cartons. Or during the manufacturing process and determines whether the appropriate tests and checks are taking place and whether the quality checks are consistent with the customer's requirements. Quality problems may happen during the massive production. Hence, inspection at this stage can timely keep you updated whether the products are consistent with your approval sample and requirements, ensuring the mass production delivery on time, so as to reduce the risks of possible delay shipment.