Question:? A: Domestic units that have obtained the following foreign exchange earnings must settle foreign exchange and cannot keep foreign exchange. 1. Export or receive foreign exchange from transit goods and other transactions. Among them, the trade export foreign exchange settled by documentary letter of credit/guarantee or documentary collection can be settled by valid commercial documents, and the trade export foreign exchange settled by remittance can be settled by export receipt verification form; 2. Winning foreign exchange in international bidding under overseas loans; 3. Foreign exchange income of domestic duty-free goods under customs supervision; 4. Foreign exchange of goods or services provided by transportation (including various modes of transportation), ports (including airports), post and telecommunications (excluding international remittances), advertising, consulting, exhibition, consignment, maintenance and other industries and various agency businesses; 5. Various foreign exchange handling fees and fines collected by administrative and judicial organs; 6. Intangible assets such as land use rights, copyrights, trademarks, patents, non-patented technologies and goodwill are transferred to foreign exchange. However, if the above intangible assets are owned by individuals, foreign exchange settlement is not allowed; 7. Foreign exchange profits repatriated by overseas investment enterprises, foreign exchange recovered under foreign economic assistance and foreign exchange income of overseas assets; ? 8. Foreign exchange from foreign creditor's rights, returned foreign exchange deposits, etc. ; 9. Foreign exchange obtained by leasing real estate and other foreign exchange assets; 10. Foreign exchange income of insurance institutions accepting foreign exchange insurance; 1 1. Net income from foreign exchange business of financial institutions with foreign exchange business licenses; 12. Foreign exchange of foreign donations, grants and aid income; 13. Other foreign exchange to be settled as stipulated by the State Administration of Foreign Exchange. 14. The foreign exchange income of foreign-invested enterprises under the current account can be retained within the maximum amount approved by the foreign exchange bureau, and the excess should be sold to designated foreign exchange banks or adjusted through foreign exchange adjustment centers.