由商会、领事馆或类似的公证机构出具的证明，用以证实签字或与信用证有关的文件，如原产地证明书、商业发票等的真实可靠性。

Certification: Legalization, official certification of the authenticity of signatures or documents in connection with letter of credits, such as certificates of origin, commercial invoices, etc. by chambers of commerce, consulates and similar recognized government authorities.

来源：国际贸易英英、英汉双解词典（经济科学出版社）