N1120A
The warnings are required for anyone that does business in California.
That would include products made in Germany, Canada, or anywhere, that are marketed and sold in California.
The warning states " ... may include ... " implying that they are not necessarily used, or found in the manufacturing process of the luggage case products.
As flyermatthew mentioned, however well-intentioned as the proposition might have been, one becomes conditioned to " tune them out " as they are everywhere, even in restaurants.