YESHERB factory has passed QS authentication and ISO9001 verification, our products have passed organic cert by EU and USDA. Our planting base is located in Shaanxi province, and we have sales company in Guangzhou city and after service & storage branch in New Jersey America. We control quality of our Mushroom Extract from raw material. Our lab have advanced equipments such as HPLC,UV, AAS and GC instruments. we have cooperations with Northwestern University, which guarantee our products can fully comply your needs. Our main product scope including Plant Extracts,Mushroom Extract,Fruit Powder,Vegetable Powder,Super Foods. More than 100 kinds of products have through the record By China Food and Drug Administration. Free sample is available for your test, if you are interested in our products pls feel free to contact us.