nitrogen phosphorus potassium compost: 1,NPK 2,15-15-15 3, ... -18-18 6,19-19-19 7,20-20-20 nitrogen phosphorus potassium compost:2,15-15-15 3,16-16 ... ,19-19-19 7,20-20-20 Compared with other fertilizer plants in China, our advantages are easy transhipment, low cost ... and unlimited power for we transport our fertilizer to FOB loading ports by barges through the Yangtze River ...