In the field of quality control, Pre-shipment Inspection (PSI) refers to a comprehensive quality, quantity, specifications, and packaging inspection of goods conducted by the buyer, a third-party inspection agency, or personnel mutually agreed upon by both parties, according to the standards stipulated in the contract, before the goods are completed and ready for export or delivery. It is a crucial quality control step to protect the rights and interests of both trading parties.

I. Core Purposes of Pre-shipment Inspection

Protecting Buyer's Rights: Confirming that the goods meet the quality standards, quantity requirements, and technical parameters stipulated in the contract, avoiding receiving substandard or short-shipped goods, and reducing the risk of returns and claims.

Regulating Seller's Performance: Encouraging the seller to strictly produce and prepare goods according to order requirements, reducing delivery delays due to discrepancies.

Reducing Trade Disputes: Providing both parties with objective and impartial inspection reports as evidence of the goods' condition, which can serve as a basis for negotiation or arbitration in case of disputes.

Adapting to Trade Compliance: Some countries (such as parts of Africa and the Middle East) require imported goods to provide an officially recognized PSI report for customs clearance.

II. Main Contents of Pre-shipment Inspection Inspection must be strictly carried out in accordance with the purchase contract, letter of credit terms, and product standards (such as national standards, industry standards, and international standards). Core contents include:

Quality Inspection
* **Appearance Inspection:** Check the surface flatness, color, and for defects such as damage, scratches, and deformation.
* **Performance Testing:** Test the product's functions and parameters according to agreed standards (such as the operational precision of mechanical products, the safety performance of electrical appliances, and the barrier properties of packaging materials).
* **Material Verification:** Confirm that the raw materials are consistent with the contract (such as the grade of plastic materials and the content of metal components).

Quantity and Specification Inspection
* **Quantity Verification:** Count the actual quantity of goods and confirm that it matches the packing list and order quantity to avoid under- or over-shipment.
* **Specification Verification:** Measure the dimensions, weight, and model of the goods to ensure they meet order requirements (such as the screw diameter of a blown film machine, and the thickness and dimensions of packaging bags).

Packaging and Labeling Inspection

Packaging Inspection: Confirm that the outer packaging is sturdy, moisture-proof, and shockproof, and can meet the requirements of long-distance transportation; confirm that the inner packaging can protect the product from damage.

Label Verification: Verify that the shipping marks (transportation marks), product labels, and warning labels are clear and accurate, and include the product name, specifications, quantity, place of origin, and consignee information.

Document Review: Verify that the packing list, commercial invoice, product certificate of conformity, test report, and other documents are complete, accurate, and consistent with the information on the goods.