There are two types of granulation they are Wet Granulation and Dry Granulation.

Wet granulation and dry granulation depends on the type of fertilizer granulators and whether adding water during granulation.

In general, Roll Extrusion Granulator(Azeus Fertilizer Machinery) is dry granulation machine. It requires moisture of raw materials less than 40% and no water added during granulation. So, it's compound fertilizer granules are also dry, in long-stick shape.

But, as for New-type Granulator(organic fertilizer by Azeus Fertilizer Machinery) and Pan Granulator (both organic and compound fertilizer), with required a low moisture of raw materials, water must be add during granulation. Or, the fertilizer granulation will fail.