Yes. A small example from my very small world (railway). Materials to be used on rolling stock (trains) must comply with Fire/Smoke/Toxicity standards. A few y

Yes. A small example from my very small world (railway). Materials to be used on rolling stock (trains) must comply with Fire/Smoke/Toxicity standards. A few years ago these standards were only at national level, there is a French standard, a German one, etc... It was hell to demonstrate that your German-made widget could be used in a train meant to operate in UK. In the last few years this has been harmonized in a EU-level standard, which makes much simpler and cheaper for manufacturers to market their products across the Union and for customers to integrate them in their systems.