We certify and agree to supply materials conforming to registrations and specifications as defined in this Kemira and/or Affiliates Material Questionnaire in addition to any specific requirements (defined as part of any additional purchasing agreement and/or Contract). We agree to provide Kemira and/or Affiliates a minimum of 30-days pre-notification prior to making changes to manufacturing locations, specifications, or major changes to manufacturing process (which may require re-certification) for the subject material. Any variance to the above must be agreed to by both customer and supplier before final approval.