| http://www.w3.org/ns/prov#value | - 2008, the Michigan legislature addressed this problem by passing the Unique-Mark Amendment, (10) which required manufacturers who sold their containers in Michigan to place a "symbol, mark, or other distinguishing characteristic on the container that demonstrates it is unique to [Michigan], or used only in [Michigan] and 1 or more other states that have laws substantially similar to this act. (
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