Product Inspections and Product Testing GN Inspections is a quality control services company performing on-site Product Inspections and product testing in China. We guarantee to have one of our trained inspectors at any factory in China within 24 hours. Pre-Shipment Inspection (PSI) An Inspection to guarantee the conformity of production to your specifications. Production Monitoring (PM) Constant oversight in your factory with daily reports on quality and production status. During Production Check (DUPRO) Control and recommendations for production processes and capacity. Initial Production Check (IPC) Inspection of machinery and materials to be used for your order prior to production. Container Loading Supervision(LS) Guarantee the finished and packed goods meet your specifications (product type and quantity) and are securely loaded for shipment.