The raw materials are produced in the Songnen Plain, one of the three black soils in the world. Black soil: the shortest cultivation time among the three black soil belts; cold area: sub-temperate cold climate with large temperature difference and severe winter; one season of the year: richer nutrient content ; Advantages of the production area: large-scale planting on the farm, the enterprise standard is higher than the national standard, and the degree of mechanized production is high; no additives: no pesticides, pollution, zero additives.