Pre-Shipment Inspection

Pre-shipment inspection, (also spelled preshipment inspection) or PSI,its work is a part of supply chain management and an important quality control method for checking the quality of goods clients buy from suppliers.

PSI ensures that production complies with specifications of the buyer and/or the terms of a purchase order or letter of credit

Pre-Shipment Documents : 

A pro forma invoice is an invoice prepared by the exporter before shipping the goods, informing the buyer of the goods to be sent, their value, and other key specifications. It also can be used as an offering of sale or price quotation.

Pre-Shipment Meanings :

When tracking shows "Pre-Shipment Info Sent to USPS" it can mean: - The package could still be in the seller's possession. - The package could have been dropped off and is still being held/sorted by USPS. - The package could have been sorted by USPS and sent off without being scanned.

Certificate of Inspection :

Certificate of Inspection for Exports and Imports into Libya. ... All goods imported into Libya require a Certificate of Inspection issued by an international inspection company such as Interlink, to allow these shipments to be financed through a documentary letter of credit issued by a commercial bank.

A Pre-Shipment Inspection is a systematic inspection of units selected at random from all batches of your order, conducted when your production is at least 80% complete. ... Inspection certificates are issued if stipulated in the letter of credit