In the sales contract, the seller usually takes the bill of lading as evidence that he has fulfilled his delivery obligation. In practice, there are three forms of bill of lading, and the proof effect of bill of lading is different with different signing methods:

1. The one with the highest authentication effect, the consignee seals the delivery note. The official seal certificate is highly effective, and the consignee should bear the legal consequences for its official seal. If there is no evidence to the contrary, the court will confirm the probative effect of the bill of lading.

2. The bill of lading with the signature of the carrier, but without the signature of the consignee's responsible person or agent, and without the official seal of the consignee.

Only express delivery, consignment, mail and other delivery methods have the carrier's seal. If conditions permit, the bill of lading signed by the consignee can be transferred out. Only the bill of lading signed by the carrier has certain evidential effect. As a transport link between the buyer and the seller, the carrier can usually deliver the goods to the consignee.

3. In the most complicated case, there is no consignee's signature, only the consignee's signature. The receipt of this delivery note has some defects.

Legal basis: Article 825 of the General Principles of the Civil Law of People's Republic of China (PRC) stipulates that when handling the transportation of goods, the shipper shall accurately indicate to the carrier the name of the consignee or instructed consignee, the name, nature, weight, quantity, receiving place and other necessary information about the transportation of goods. If the shipper makes false declaration or omits important information, thus causing losses to the carrier, the shipper shall be liable for compensation.