It is also about allowing a small player into the market. If there is no harmonization then then only producers who can afford to play the game are ones that c

It is also about allowing a small player into the market. If there is no harmonization then then only producers who can afford to play the game are ones that can dedicate the resources to producing a hundred different types of mayo to meet various different local production requirements. Alternatively, this lack of harmonization simply allows the largest market to dictate the terms of the market for all other countries: consider situations where US states have different requirements for certain products and how this lets some states dictate terms to others, at times this leads to stricter emission standards when CA writes the rules ("yay" says the left) and at other times it leads to school textbooks declaring the US a judeo-christian nation and undermining the separation of church and state because TX writes the rules ("boo" says the left.) As always, it is not as simple as it initially appears.