This item is product of high purity Uncooked products，the formula is scientific and reasonable.It's not only rich in NPK, that is essential for crops,but additionally adds magnesium and sulfur.after application,it may boost the absorption and utilization of assorted growth factors of crops,effectively protect against the deficiency illness conveniently caused by https://edwinuphaq.dailyblogzz.com/33231660/a-review-of-npk-fertilizer-for-root-development