While March copper prices are showing gains during early Wednesday US trading, Asian copper prices were weaker. There were some upbeat Chinese copper demand forecasts this week, which may be given additional credence in the wake of mostly favorable Chinese economic data today. In a development that might be seen as a negative factor for prices, the market received news that Antofagasta registered a 13% quarterly increase in copper production as well as their annual output increasing by 23% over the prior year. LME Copper Stocks overnight declined by 1,525 tons, and have now fallen to only 329,300 tons.