Notice by a supplier of any proposed amendment, modification, termination, cancellation, discontinuance or refusal to renew an agreement with the distributor shall be written, shall be provided to the distributor in the manner provided in the agreement, if written, or if the agreement is oral, by certified mail, and the notice shall contain all of the following:
(1) A statement of intention to amend, modify, terminate, cancel, discontinue or refuse to renew the agreement.
(2) A statement of the reason(s) for the amendment, modification, termination, cancellation, discontinuance or nonrenewal.
(3) The date on which the amendment, modification, termination, cancellation, discontinuance or nonrenewal will take effect.