请帮忙翻译：本年度销售量新客户贡献很大，预计年终销量42%为新开发客户产生；

The sales figure this year is greatly attributed to the new customers.42 percent is expected from the new customers.
我搞外贸的，这个应该没有错的。

This year sales volume new customer contribution is very big,estimated the year's end sales volume 42% for newly opened sends thecustomer production;