All products of Huiwen Biology come from natural materials and are naturally grown. In order to ensure the safety and efficacy of raw materials, we have selected the most suitable areas for raw materials growth in China, and established a number of unique raw material planting bases. Huiwen Biology manages the product quality from the source: sprays no pesticides during the planting process, strictly guarantees the growth environment of crops, ensures the content of effective components of crops, carefully cultivates, and this makes the final products more natural, safe and effective.