Copper in London almost reached a 44-month low after China increased the trading limits of the Yuan against the greenback. The metal for July delivery traded at $6,466.75 a metric ton as of 10:39 a.m. in Hong Kong after it added as much as 0.3% and dropped as much as 0.4%. The contract was little changed at $6,415 on Thursday trading session, the lowest settlement unseen since July 2010.