What does b/l mean in international trade?

What does b/l mean in international trade, B/L is the abbreviation of bill of lading, which means bill of lading.
What does b/l mean in international trade:
A bill of lading (B/L, Article 71 of the Maritime Law) is issued by the master or the carrier or the carrier's agent to certify the receipt of specific goods, allowing the goods to be transported to a specific destination and delivered to the receiving party. Shipper's certificate.
In foreign trade, a certificate issued to the consignor (either the exporter or the freight forwarder) by the transportation department when carrying the goods.
The consignee picks up the goods with the bill of lading to the transportation department of the freight destination (if the consignee has a small order, he needs to exchange the master bill with the domestic freight forwarder). The bill of lading must be signed by the carrier or the ship before it becomes effective.
What does B/L foreign trade term mean?
Bill of Lading: A document that proves the contract of carriage of the goods and that the goods have been received or shipped by the carrier, as well as a document that the carrier guarantees to deliver the goods. In foreign trade, B/L is called the bill of lading, which is a certificate issued by the transportation department to the consignor (exporter or agent) when transporting the goods.
The consignee transports the goods to the shipping department of the freight destination according to the bill of lading (if the consignee is under the control of the small order, he needs to exchange the main bill of exchange with the domestic forwarder). The bill of lading must be signed by the carrier or owner before it becomes effective.