发票、产地证应一起认证或在发票内注明产品原产地(Goods are of Chinese Origin)。若单独认证发票,发票内须注明"WE CERTIFY THAT THIS INVOICEISAUTHENTIC, THAT IT IS THE ONLY ISSUEDBY US FOR THE GOODSDESCRIBED THEREIN,THAT IT SHOWS THEIREXACT VALUEWITHOUT ANY DEDUCTION,WE DECLAREALSO THAT THE ORIGIN OF THE GOODS ISEXCLUSIVELY FROM CHINA."