Where are the larger veterinary drug manufacturers? Like what?

The largest number of veterinary drug production enterprises is Henan, and about 70% of the national veterinary drug production enterprises are concentrated in Henan. The annual livestock exchange meeting was held in Zhengzhou. Zhengzhou Xinsang Garden (north of Lianhuo Expressway), the whole village is a manufacturer of poultry and veterinary drugs. Every weekend or even every day, many veterinary drug companies recruit marketing personnel there, because most of the veterinary drug marketing personnel rent houses in Malizhuang.