Indonesia's refined tin exports in May stood at 4,380.23 tonnes, Trade Ministry data showed on Wednesday, down 35% from the same month a year earlier.

On monthly basis, however, shipments from the world's largest exporter of the metal, increased slightly from April's 4,220.59 tonnes, the data showed.

(Reporting by Bernadette Christina Munthe; Writing by Fransiska Nangoy; Editing by Louise Heavens)