... 1,Food Grade,.Assay: 98.0% min. 2,GMP certified manufacturer 3,Kosher, ISO, GMP, HACCP 98% Feed grade inositol NF121 ... ,Feed Grade,.Assay: 98.0% min.2,GMP certified manufacturer3,Kosher ... of medicine to suppress thyroid gland disease, making inferior thiourea dioxide. Regarded as the bleaching agent, coloring agent and defending the ...