Largest selection of enamel online! brands include: thompson, ninomiya, w.g. ball, sunshine, schauer, milton bridge. There are 226 glaze frit enamel powder suppliers, mainly located in asia. the top supplying country or region is china, which supply 100% of glaze frit enamel powder respectively. glaze frit enamel powder products are most popular in western europe, south Compound direct on frit. it is a mixed black frit, can be applied to enamel cookware / gas stove / bbq. anti acid glossy frit for cast iron. it is a cast iron anti acid glossy black frit, one coat one fire ,can be applied to cast iron oven / grills. What is enamel? in general terms, vitreous enamel, porcelain enamel, copper enamel and jewelry enamel all refer to the same thing. enamel is a glassy compound applied to and bonded by heat (fusion) to a metal surface; to a copper surface at 1450 degrees f., and to a glass surface at 1100 degrees f. to 1500 degrees f.