SHANGHAI, Mar. 7 (SMM) – LME zinc prices overnight weakened during Asian trading hours, and further inched down to close at USD 2,013.3/mt on concerns over the result of Greek debt exchange plan, down USD 76.8/mt or 3.67%, rolling back previous gains in recent two weeks. Market concerns improved in response. SHFE 1205 zinc contract prices should move between RMB 15,400-15,700/mt today, with spot discounts narrowing to RMB 80-180/mt.