Hong Kong's stocks traded lower on Thursday on worries European debt turmoil will curb the demand from China's main export region. Hang Seng index declined 0.32% or 60.70 points and closed at 18,629.52, posting a 11.7% drop for May. Property companies extended losses with China Overseas Land & Investment dropping 4.3% and Agile Property Holdings slipped 1.1%. Oil provider Cnooc gave up 1.1% along with diminishing commodity markets.