Order. This document contemplates that the buyer and the seller will negotiate and incorporate all of the terms and conditions of the transaction into this. "Contract for sale" includes both a present sale of goods and a contract to sell goods at a future time.With crossborder agreements, international contract law comes into play. Consult an attorney before entering into international contracts. The next step is to negotiate a foreign sales agreement. There is certain information you need to provide, and many legal issues to consider. Html (last modified Apr. 1997). Designed to help Texas small manufacturing companies remain competitive in the ever changing global marketplace. Register a Foreign Corporation in Texas. Complete the "Business" and "Seller" section.