Michigan Compiled Laws, Chapter 324. Natural Resources and Environmental Protection § 324.16302

Sec. 16302. (1) A person shall not sell or offer for sale in this state containers connected to each other by a separate holding device that is constructed of plastic rings unless the device is degradable and bears a distinguishing symbol.

(2) A manufacturer of container holding devices that are constructed of plastic rings who sells or offers for sale or provides for the sale or offer for sale in this state of these devices shall design a distinguishing symbol indicating that the devices are degradable and shall register the distinguishing symbol with the department and provide the department with a sample of the device. The department may require test data that show that the device is degradable as required in this part.

(3) As used in this part, a separate holding device does not include a vacuum-packed wrapping that completely encases the containers that it connects.