Many products on the EU market are subject to harmonised rules that protect consumers, public health, and environment. Harmonised rules preclude the adoption of possibly divergent national rules and ensure the free circulation of products within the EU. Some sectors are still governed by national provisions however. The principle of free movement of goods ensures that these provisions do not lead to the creation of unjustified barriers to trade.
Harmonised sectors are subject to common rules across the EU. They provide a clear and predictable legal framework for businesses. If manufacturers follow these rules, their products can be sold freely in the market:
Non-harmonised sectors are not subject to common EU rules and may come under the national rules. These sectors should still benefit from Treaty provisions governing free movement of goods according to Arts. 34-36 TFEU. National rules on these products are subject to a notification procedure that ensures they do not create undue barriers to trade.