我们双方之间才会有10多年的稳定的合作关系。求翻译

We have a stable cooperational relationship of ten years long.

We've had over 10 years of stable business relationship.

we have kept our stable relationship for 10 years.

帮你翻译如下：
So that we can have a stable cooperated relationships over 10 years between us.

Therefore we've developed a successful partnership for over ten years.