SAP for agriculture, super absorbent polymer, water retain agent 1.Non-toxic,odorless,reusable,biological. ... 2.for garden, pot SAP for agriculture purpose, super absorbent polymer, water retain agent:can swell hundreds of times in ... , 100g/hard box, 500g/barrel, 1KG/PET bottle, etc20kg/brown paper bag25kg/brown paper bag SAP for agriculture and gardening, super absorbent polymer