Unless otherwise provided under this Act or otherwise in accordance with State law, a unit of local government, including a home rule unit, or any non-home rule county within the unincorporated territory of the county, may not regulate the activities described in this Act in a manner more restrictive than the regulation of those activities by the State under this Act. This Section is a limitation under subsection (i) of Section 6 of Article VII of the Illinois Constitution on the concurrent exercise by home rule units of powers and functions exercised by the State.