外贸保险单要背书吗英文

以下几种常见的表达询问“外贸保险单要背书吗”的英文方式：

• Doestheforeigntradeinsurancepolicyneedtobeendorsed?
• Isitnecessarytoendorsetheforeigntradeinsurancepolicy?
• Shouldtheforeigntradeinsurancepolicybeendorsed?