... Ceramic Grade Zinc Oxide SGS(ROSH) ISO 9001:2000 ceramic raw materials French process CERAMIC GRADE ZINC OXIDE Performance: The product ... used as flux, opacifier and crystallizing agent for making cerulean blue glaze, ceramic pigment, etc.When the product is used ... used as flux, opacifier and crystallizing agent for making cerulean blue glaze, ceramic pigment, etc.Packing: Polypropylene woven bags or ...