... -40-4,0-30-15 PK Compound fertilizer of various grades with good quality and best ... and kalium): 10-0-10, 12-12-0,0-8-16, 13-5-0, 15-15-0, 0-10-5 ... , 16-8-4-1.6 Fe (or Zn, MnB), etc.l ... and specifications according to their needs.Standard: GB15063-2001 Compound PK Fertilizer ,phosphate