super absorbent polymer,SAP,water absorbent polymer 1.Non-toxic,odorless,reusable,biological. 2.baby diaper Super absorbent polymer,SAP,water absorbent polymer:can swell hundreds of times in ... substrate to preserve water and nutrionts,small plants, agriculture and non-soil transportaion.There are 4 sizes, ... study"for details)Packing:20kg/bag25kg/bag super absorbent polymer(SAP,water absorbent polymer)