Section 136.07 - Contract performance; records(1) No contractor may fail to perform upon the contractual provisions required to be set forth in future service contracts under s. 136.06(2).(2) Every contractor shall retain business records for goods ordered for purchase for 2 years following delivery of those goods. These records shall include, but not be limited to, records showing the contractor's costs of purchased goods and all customer orders for those goods. Every contractor renting videotapes shall retain copies of all unexpired videotape rental contracts, identifying the member and the cost and duration of membership.1975 c. 209; 1985 a. 324.