SHANGHAI, Jul. 19 (SMM) – SHFE 1310 zinc contract prices opened slightly higher at RMB 14,535/mt, struggling around RMB14, 560/mt in the morning session. A-shares tumbled in the afternoon below 2,000, distressing market sentiment and causing selling pressure to grow. SHFE zinc prices thus fell below the 20-day moving average, dipping to RMB 14,490/mt, finally closing at RMB 14,500/mt, down RMB 35/mt or 0.24%. Trading volumes of SHFE 1310 zinc contract decreased by 10,626 lots, to 25,742 lots, and total positions decreased by 2,820 lots, to 138,130 lots. Trading volumes of SHFE 1311 zinc contract decreased by 9,340 lots, to 31,626 lots, and total positions increased by 5,584 lots, to 91,642 lots.