SHANGHAI, Aug. 13 (SMM) –SHFE 1509 tin opened at RMB 108,520/mt on Thursday. The metal fell to around RMB 107,800/mt due to exit of longs, and finally ended down RMB 610/mt or 0.56% at RMB 107,790/mt. Trading volumes were up 446 lots to 1,550 lots, and positions were down 60 lots to 1,476 lots. Positions of SHFE 1509 tin decreased steadily as delivery date of SHFE 1508 tin is nearing. US retail sales data for due for release tonight. Tomorrow will see the release of US PPI and industrial output data. SHFE 1509 tin should test support at RMB 106,300/mt tonight.