A more thorough explanation:

A long-form bill of lading is a document used in the transportation of goods that acknowledges the receipt of goods by a carrier or shipper's agent and outlines the terms of the transportation contract. It is a legal document that serves as proof of shipment and delivery of goods.

For example, if a company ships a container of goods from China to the United States, a long-form bill of lading will be issued by the carrier or shipper's agent. This document will contain all the details of the shipment, including the type of goods, the quantity, the destination, and the terms of the transportation contract.

The long-form bill of lading is an important document for both the shipper and the carrier. It serves as proof of shipment and delivery, and it also outlines the responsibilities and liabilities of both parties in case of any issues or disputes.