Pos：

NPK12-12-17+2MgO

Compound NPK fertilizer is the fertilizer which contains two or three nutrients of N, P, K. 

It is recommended for vegetables, fruits. Flowers, turf, tea, trees, tobacco, and ornamental. Via irrigation systems on any growing medium, it can be used for foliar spraying dissolved rapidly and completely. And it remains in solution absorbed via root and leaf surfaces.

Formula can be:

NPK15-15-15

NPK17-17-17

NPK12-12-17+2MgO