When shipping goods from China to Chad, you'll need to prepare several documents to comply with customs regulations and facilitate the smooth transit of your shipment. Here is a list of common documents required for international shipments:

1. Commercial Invoice: This document provides details about the goods being shipped, including their description, quantity, value, and other relevant information. It's essential for customs clearance and valuation purposes.

2. Packing List: A packing list itemizes the contents of the shipment, including details such as weight, dimensions, and packaging type for each item. This document helps customs officials verify the contents of the shipment and ensures accurate handling and processing.

3. Bill of Lading (B/L): The bill of lading is issued by the carrier or freight forwarder and serves as a receipt for the goods, evidence of the contract of carriage, and a document of title. It includes details about the shipment, such as the parties involved, the goods being transported, and the terms of the agreement.

4. Certificate of Origin: This document certifies the country of origin of the goods being shipped. It may be required to determine eligibility for preferential trade agreements, assess applicable duties and taxes, and comply with import regulations.

5. Customs Declaration: A customs declaration form provides detailed information about the goods being shipped and is used for customs clearance purposes. It includes essential details such as the value of the goods, their classification, and other relevant information required by customs authorities.

6. Import License or Permit: Certain goods may require import licenses or permits to facilitate their entry into Chad. It's essential to verify whether your products fall under any such regulations and obtain the necessary licenses or permits before shipping.

7. Insurance Certificate: While not always mandatory, an insurance certificate provides evidence of insurance coverage for the goods during transit. It offers protection against loss, damage, or other risks that may occur during shipping.

8. Other Documentation: Depending on the nature of the goods and specific regulatory requirements, additional documents such as certificates of compliance, sanitary certificates, phytosanitary certificates (for agricultural products), or other regulatory documents may be necessary.

It's crucial to consult with your freight forwarder, shipping company, or customs broker to ensure that you have all the necessary documentation for your specific shipment from China to Chad. Additionally, customs regulations and documentation requirements may change over time, so it's essential to stay updated with the latest information from relevant authorities.