... +2MgO,NPK 10-20-10,NPK 16-20-0,NP 23-21-0 NPK compound fertilizersSince the establishment of LVFENG FERTILIZER ... -10, 13-8-27, 14-18-18 - 6S - 1B203, 14-23-14- 5S - 1B203, 10-20-10, 15-05-20, 20 ... -0 + S, 16-20-0 + S, 20-10-0, 23-21+4S, 23-23-0, 15-15-0NK compound fertilizersLVFENG FERTILIZER’s NK ... +2MgO,NPK 10-20-10,NPK 16-20-0,NP 23-21-0