SHANGHAI, Jul. 19 (SMM) – SHFE lead prices fluctuated up after opening higher on Thursday under the influence of positive economic data in US, and spot lead prices edged up with spread among brands narrowing. Nanfang and Shuikoushan were mainly quoted between RMB 15,100-15,120/mt, with spot premiums over the most active SHFE lead price at RMB 100/mt. Quotations for Mengzi and Shenqian were between RMB 15,070-15,080/mt. Downstream buyers only made inquiries due to high prices, leaving limited deals done.