MI HB4815

Defines "incandescent lightbulb" as a lightbulb with filaments that produce light when heated by electrical resistance.

Defines "generic or insignificant parts" as minor components like steel, glass, springs, screws, nuts, pins, and ceramics that have applications beyond lightbulb production.

Allows incandescent lightbulbs manufactured in Michigan using only generic or insignificant imported parts to be labeled "made in Michigan" on a central part.

Establishes legislative findings that Michigan-manufactured incandescent lightbulbs remaining within the state have not entered interstate commerce and are not subject to federal regulation.

Permits "made in Michigan" labeling as evidence that a lightbulb has not entered or substantially affected interstate commerce if it remains within the state.