... ,SGS,Intertek,BV. ISO9001:2008 GB/T 19001-2008 Specification:---Single Super PhosphateSpec.:P2O5:18%min Moisure:5%max Free Acid ... fixation, reducing nitrogen loss. Can promote the plant germination, root, branch, strong and mature, can be used for production of compound ... : A. We cooperate and invest large scale national factories of Single Super Phosphate B. We have own warehouse and select good ...