Except as otherwise provided in this Agreement, this Agreement contains the parties` full understanding of their subject matter and supersedes all prior or concurrent agreements, understandings and negotiations. No modification or modification of this Agreement shall be deemed effective unless it is signed in writing and signed by the parties. If you have other legal requirements, check out our full list of customizable service agreements for each industry. Other names in this document: Performance Services Contract, Product Execution Services Agreement and Service Fees are set out in Annex B to this Agreement. The fulfillment provider and service check these rates annually. For all services not listed in this Agreement or Annex A, the Seller shall pay to the Fulfillment Service such consideration as may be agreed in advance in writing….