Like Wandashan, Sanyuan also has a state-owned background, and is owned by the Capital Agricultural Group, formerly known as the Beijing Milk Terminal, which merged the original farms in Beijing and was listed on the Shanghai Stock Exchange in 2003. In 2008, Sanyuan dairy products were not detected to contain melamine, and were once out of stock in the Beijing market, and in 2009, Sanyuan acquired Sanlu Group to enter the milk powder market, but affected by the domestic situation, the development was very slow, and so far it has only sold high sales in Beijing.
 
With the help of the resources of Shounong Group, Sanyuan has more advantages in milk source than other regional dairy enterprises, and has also established the country's largest large-scale, standardized and intensive Holstein breeding base Sanyuan Green Lotus Dairy Farming Center, which requires the number of somatic cells to be less than 300,000/ml, the total number of cells less than 100,000/ml, and the protein content to be greater than 3.1g/100g, which is slightly higher than the EU standard.
 
In terms of adult milk powder, the ternary layout of the whole family series, Jin Aiyi series, Aiyi series and Ai Liyou series of products, the first two are suitable for all members of the family, but the whole family sweet milk powder adds white sugar and maltodextrin two kinds of sugar, the sweetness is more obvious than the general sweet milk powder, 100g milk powder contains 18g protein, people who pay attention to sugar intake are not recommended. Aiyi series and Ai Li series are formulated for different groups of people, including children's formula, student formula, women's formula and middle-aged and elderly formula, of which Aiyi women's formula contains 18.5g of protein, 900mg of calcium, slightly higher than other brands of women's milk powder, and also adds folic acid, dietary fiber, a variety of vitamins and minerals, etc., the nutrition is more comprehensive, but the price is expensive, 400g is close to 50 yuan a bag.
 
In recent years, many domestic dairy companies have also regarded Beijing as an important market, and the regional advantages of Sanyuan have gradually decreased, and the milk powder market in China can only rank in the third echelon.