destoner for herbs

when cleaning herbs , the customer need to remove the stone . the air separator cant do it . 

but , it should use different kind of seives for herbs and seeds . because if use the normal sieves , the herbs may get stuck on it . Which will affect on the preformence of the cleaning . 

Therefore, our company specially designed a screen for spices, which allows the wind to pass through the screen and prevents the screen from being blocked. After years of verification, this destoner works very well and customers are very satisfied.