1.signed commercial invoice 已签定的商业发票
　　in duplicate 一式两份
　　in triplicate 一式三份
　　in quadruplicate 一式四份
　　in quintuplicate 一式五份
　　in sextuplicate 一式六份
　　in septuplicate 一式七份
　　in octuplicate 一式八份
　　in nonuplicate 一式九份
　　in decuplicate 一式十份

　　2.beneficiarys original signed commercial invoices at least in 8 copies issued in the name of the buyer indicating (showing/evidencing/specifying/declaration of) the merchandise, country of origin and any other relevant information. 以买方的名义开具、注明商品名称、原产国及其他有关资料，并经签定的受益人的商业发票正本至少一式八份

　　3.Signed attested invoice combined with certificate of origin and value in 6 copies as reuired for imports into Nigeria. 以签定的，连同产地证实和货色价值的，输入尼日利亚的连系发票一式六份

　　4.beneficiary must certify>

　　5.4% discount should be deducted from total amount of the commercial invoice 商业发票的总金额须扣除4%折扣

　　6.invoice must be showed: under A/P No.… date of expiry 19th Jan. 1981 发票须剖明：按照第……号采办证，满期日为1981年1月19日

　　7.documents in combined form are not acceptable 不接管连系单据

　　8.combined invoice is not acceptable 不接管连系发票