В случае возникновения реальных пот

В случае возникновения реальных потребностей будет весьма кстати иметь заранее согласованный сторонами договор на приобретение у вас емкости.

Результаты (английский) 1:

In case of real needs would be very handy to have previously agreed by the parties to a contract for the purchase of capacity you have.

Результаты (английский) 2:

In the event of actual needs will be very helpful to have a pre-agreed by the parties agreement to purchase your containers.

Результаты (английский) 3:

in the event of an actual needs will be very useful to have a pre agreed upon by the parties contract for the sale of your tank.