April platinum sustained a large selloff during overnight trading as Euro zone risk concerns are widely seen to be weighing on prices. News of lower first half platinum production levels from Implats may have been of little interest to the platinum market overnight, which for some traders may suggest that the platinum market has embraced a negative demand outlook as a result of sagging global economic expectations. Other traders have suggested that a moderate portion of the decline in platinum prices this week may be the result of slowing Chinese economic growth concerns. The platinum market will pay some attention to US inflation figures in today's Producer Price Index data, which is expected to post minimal gains during January.