Copper futures declined slightly on the increasing worries across lower PMI in China, the world largest consumer. China's HSBC services purchasing managers' index indicated that services sector activity declined to three-month low to 52.5 last month from 54.1 in October. On the Comex division of the New York Mercantile Exchange, copper futures for March delivery were traded at USD3.582 a pound at the early European trade, adding 0.28% since opening.