The draft has been handed to the bank on clean collection.

汇票曾经交银止按光票托收。

Clean collection means the collection of financial documents not accompanied by commercial documents.

光票托收是指不附带商业单据的金融单据的托收.

C: 'Clean Collection' means collection of financial documents not accompanied by commercial documents.

“光票托收”系指未附商业单据的金融单据的托收。