Fee payments should be made within 30 days of the receipt of the invoice or by the due date of the invoice whichever is earlier.

家长在收到账单30天之内或账单到期日之前（以较早日期为准）应支付相应费用。

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INVOICES must be rendered in duplicate not later than the day following shipment. Attach bill of lading or express receipt to each invoice.

手签的、按装船货物全额开具的以进口商为付款人的远期汇票一式两份，必须附有相关单据。

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