SHANGHAI, May 27 (SMM) –SHFE 1507 tin contract opened at RMB 116,760/mt on Wednesday. The contract fell to RMB 116,200/mt as longs exited, but then rebounded to RMB 117,570/mt as longs reentered. Finally, the contract closed down RMB 1,710/mt at RMB 116,560/mt. Trading volumes were down 938 lots to 17,864 lots, and positions were up 452 to 7,100. SHFE 1507 tin contract is expected to move between RMB 116,000-118,000/mt during today’s night session.