An Initial Production Check (IPC) is a quality control activity conducted during the early stages of product manufacturing. This process involves inspecting the quality of raw materials, the condition of production equipment, and the compliance of production processes.
An early quality estimate helps effectively control potential quality risks during production and in the supply chain.

During Production Inspection (DPI) is an inspection conducted during the manufacturing process to monitor and assess product quality in real-time at various stages of production. Typically carried out by independent third-party inspection agencies, DPI aims to ensure that the product complies with predetermined quality standards and specifications. This process involves verification of raw materials, production progress, and manufacturing processes. Additionally, inspectors will conduct quality inspections on finished and semi-finished products.

PSI conducted when the order is at least 80% complete and packed. It serves as the final quality control check before the delivery of goods, and is, therefore, also referred to as a Final Random Inspection (FRI).
PSI is a quality control and inspection service conducted before the shipment of products. It is a useful ,cost saving ,and common method to ensure products quality level is within AQL.

FRI is performed mostly when 100% products finished and packed ready for delivery.it is mathematical &statistical way to check the product quality level is generally accpectable for delivery.

The focuses will still be on the facilities, legitimacy, organization, annual sales volume, production management, and quality management:

Factory audit services provide detailed, on-site assessments by professionals to evaluate and improve factory operations.