BB fertilizer is a compound fertilizer made by mixing several granular straight fertilizers or compound fertilizers in a certain proportion. In generally, the common single fertilizer contains nitrogen fertilizer, phosphorus fertilizer and potassium fertilizer. In addition, the BB fertilizer is often used in crops and lands as the fertilizer to improve the crop yields. As a professional fertilizer machinery manufacturer, we can provide you with the BB fertilizer processing machine to build a complete production line. The following content shows machines in the BB fertilizer manufacturing line.