Detailed explanation of pre-production inspection IPI, production inspection DPI, pre-shipment inspection PSI of the core application of the scene, compare the three types of foreign trade inspection of the differences in the logic of choice, according to the need to match the quality of the whole process of product production control.

Pre-shipment inspection, also known as final inspection / pre-shipment inspection, is a third-party inspection company on behalf of the buyer and seller to carry out the quality control process, which can reduce the risk of international trade, to ensure that the product meets the quality standards, to promote on-time delivery; services include quantity verification, appearance inspection, packaging safety, etc., the process covers the application, planning, on-site inspection to the report delivery, for cross-border transactions "demining ", fundamentally protecting the rights and interests of both parties.