SOP or Sulfate of Potash is a chlorine-free potassium source with added sulfur. It is the premium fertilizer for potassium. Compared with conventional potassium fertilizers, SOP commands a higher market price due to its purity and crop compatibility. For investors evaluating SOP fertilizer production lines, understanding what SOP fertilizer contains and how to efficiently manufacture it is a fundamental knowledge that has ties with your return on investment.
