Deyun is an Australian dairy brand, which belongs to the private dairy company in Sputt, Australia. This brand has a history of more than 6 years, and has applied for registration of a trademark in China. Deyun milk is imported from Australia, which has a vast territory and a sparsely populated area, rich pasture and many cows, and its feeding cost is low, so its price can be guaranteed to be relatively low.

In addition, it is pointed out in an article that the reason why Deyun milk is cheap is not because of quality problems, but because this milk is directly shipped from the factory to domestic sales, without the price difference link of middlemen and without advertising in the market.