Our employees or agents are not authorised to make any representations concerning the Equipment and/or Products unless confirmed in writing and any advice or recommendation given by them to you as to the storage, application or use of the Equipment and/or Products which is not confirmed in writing is followed or acted upon entirely at your own risk Charges" means our current hire charges from time to time including any charges for the Service during the Hire Period and/or any charges for the sale of the Products or supply of Services