これらに加えメイン市場の北米自動車販売が好調なこともあり、2年前と比較

これらに加えメイン市場の北米自動車販売が好調なこともあり、
2年前と比較して棚卸資産回転日数を約10日削減することができました。

Results (English) 1:

In addition, the main market of North American automotive sales also is aWe have about 10 days to reduce inventory turnover, compared with two years ago.

Results (English) 2:

There is also a North American car sales in the main market in addition to these be strong,
we were able to reduce the inventory turnover in days about 10 days as compared with two years ago.

Results (English) 3:

In addition to these booming car sales, the main market of North AmericaTwo years ago, and it is compared with the inventory turnover is reduced to about 10 days.