Workers walk through an aluminium ingots depot in Wuxi, Jiangsu province September 26, 2012. China's official manufacturing managers' index (PM) may have edged up to 49.8 in September from a nine-month low of 49.2 in August, signalling that the economy may be stabilising as recent pro-growth measures gained traction. REUTERS/Aly Song (CHINA - Tags: BUSINESS)