SHANGHAI, Jun. 26 (SMM) –SHFE 1709 tin opened at RMB 144,180/mt on Monday, and slid to RMB 143,800/mt in the morning session. The most active contract dived in the afternoon to RMB 142,510/mt before ending down RMB 1,410/mt or 0.98% at RMB 142,880/mt. Trading volumes decreased 594 lots to 13,744 lots, and positions increased 6,672 lots to 20,138 lots. SHFE 1709 tin will fall further to test support at RMB 141,000/mt.