Dear, 
we are mushroom manufacturer in china and we can supply you the dried mushroom as your requirement.below is our production information. 
Specifications 
3-10cm Dried Mushroom 
1. Our own production bases 
2. High quality Grade A 
3. Competitive price 
4. HACCP, ISO9001 
Features: 
Shiitake mushroom are often dried and sold as preserved food in packages. These must be rehydrated by soaking in water before using. Many people prefer dried shiitake to fresh, considering that the sun-drying process draws out the umami flavor from the fresh mushrooms by breaking down proteins into amino acids and transforms ergo sterol to vitamin D. 
1) Size: 2-3cm, 3-4cm, 4-5cm, 5cm, and 5cm up Dried Mushroom. 
2) Healthy food with best quality and tasty. 
3) Rich in nutrition. 
4) Benefit stomach and appetizing. 
5) Enhance calcium absorption. 
6) High-protein, amino acid, low-fat nutrition, help human detoxify and shape body. 

Quality control: 
Our company pays attention to not only the continuity of supplying goods but also the quality and safety guaranteed. 
1) Both of our plant bases of cultivated mushroom and processing factory are strictly comply with the requirements of food safety and health. 
2) With the certificates of ISO, HACCP, GAP etc. 
3) All the products must be inspected by Chinese Commodities Inspection Bureau before exported. 

we want to build long business relationship with you,if you need pls connect with me. 

Best regards