SHANGHAI, Sept. 26 (SMM)--Last Friday, as the US dollar index rose to 78, LME zinc prices dipped to a new low this year at USD 1,894/mt at noon, and then rallied to USD 1,900/mt. Finally, LME zinc prices closed at USD 1,910/mt, down USD 82/mt. SHFE 1112 zinc contract prices should fall to RMB 15,000-15,300/mt today. Spot prices should be RMB 0-50/mt lower or RMB 0-50/mt higher than SHFE three-month zinc contract prices. Downstream buyers will increase purchases ahead of the National Day holiday.