No amendment of any provision of this Agreement will be effective unless made in writing and signed by an officer or a duly authorized representative of each party. No failure or delay by any party in exercising any right, power or privilege hereunder shall operate as a waiver thereof nor shall any single or partial exercise thereof preclude any other or further exercise of any other right, power or privilege. The rights and remedies herein provided shall be cumulative of any rights or remedies provided by law.