Sodium benzoate, the sodium salt of benzoic acid, is a large-scale used food preservative with the European food additive number E211.

China is the biggest manufacturer of sodium benzoate and its export quantity of benzoic acid, its salts and esters reached 90,500 MT and the corresponding amount of 120 million USD in 2019.

If calculated by its max usage with 0.1% in food, the total food with it would be around 1 billion MT.  Wow…so big market.

http://www.chinafooding.com/Sodium_Benzoate