What is the difference between Chaga with different growth years? Which one can be directly used as medicine?

As far as the quality of raw materials in Chaga is concerned, it can be divided into three grades. If the growth period is less than 5 years, the content of effective components is extremely low and the quality of raw materials is the worst; If the growth period is 5- 10 years, the content of effective components is about 8%, which has certain health care value; The best quality is Chaga, the growth period is more than 10- 15 years, and the content of effective components can reach more than 12%. Therefore, when you choose Shaka products, you should first look at the place of origin, and then look at the growth year of raw materials, so as to buy high-quality Shaka.