1)MOQ:4ctns 2)Material:PVA,powder 3)Non-toxic,environmentally,washable 4)Fit for school,office 5)Shelf time:3-5years Item6ml ... )No harm to human,nontoxic for office,school & home;2)Conforms to ASTMD-4236,EN71-1,2,3,MSDS&CE3)Different colors package ... &volumes 4)Dry instant,washable,safe and convenient.5)FREE samples for evaluation ...