There is no doubt about it. It is a product outsourcing unit of pine pollen research and development center of subtropical forestry research institute under the National Academy of Forestry. The quality of Yalin series products bought in the store is guaranteed. Yalin Institute's research on pine pollen began in the 1980s, when it was ordered by the state to save the pests and diseases of Japanese pine trees. It has the truest uniqueness and authority. In fact, the highest technology of pine pollen is storage and preservation. Academy of Forestry has always mastered this high-end technology. Write for a long time, no score. . . . . . .