This product is fabricated from high purity raw resources，the system is scientific and fair.It's not only full of NPK, and that is important for crops,but in addition adds magnesium and sulfur.right after application,it might promote the absorption and utilization of assorted growth things of crops,correctly reduce the deficiency disorder quickly https://bulk-order-npk-12-12-17-268913.glifeblog.com/31770416/an-unbiased-view-of-npk-12-12-17-2-b-te-for-citrus-crops