AES Engineering Ltd Group worldwide terms and conditions of purchase for AES Engineering Ltd. These Worldwide Terms and Conditions of Purchase ("Terms") shall govern all purchases of goods or services (“Products”) by A.E.S. Engineering Limited, and all affiliates, subsidiaries, and divisions thereof (collectively, “Buyer”). Buyer and Seller are the parties named on the Purchase Order issued by Buyer (“PO”). The PO shall constitute the exclusive offer of Buyer to purchase Products and shall incorporate these Terms.