(2) In the case that Class A enterprises delay payment for more than 90 days (exclusive) and Class B or C enterprises delay payment for more than 30 days (exclusive) during the supervision period, the enterprises shall report the corresponding estimated payment date, the corresponding customs declaration amount and the related relationship type to the foreign exchange bureau through the enterprise end of the monitoring system within 30 days from the date of export or import. (3) For the trade credit business that should be declared according to the above-mentioned 1 2, if the enterprise fails to declare to the foreign exchange bureau through the enterprise end of the monitoring system within 30 days from the actual date of the import and export of goods or the receipt and payment business, it shall submit a statement to the foreign exchange bureau (explaining the reasons for failing to declare online through the enterprise end of the monitoring system in time, the items to be declared and the specific contents) for on-site declaration. (4) For other trade credit businesses, enterprises can decide whether to submit relevant information to the foreign exchange bureau independently according to the influence of related businesses on the matching of their foreign exchange receipts and payments with imports and exports.