CNH Industrial, the maker of New Holland and Case IH machinery, has reported a 6% decline in sales to $12.1bn for the first six months of the year as weak commodity prices continus to hurt machinery sales.However, despite the dip in sales, CNH was able to improve operating margins in the first half of the year by 10 basis points to 5.9% thanks to a strong increase (+14%) in second-quarter operating profits from agricultural machinery sales.