Joy-Mark, Inc. is a manufacturing company established in 1977 with facilities in Cudahy, WI. They specialize in producing a wide range of foundry feeding aids and insulating metal handling products through highly automated vacuum forming and mixing processes. In 2013, they formed GTP Joymark, LLC in a joint venture to introduce new technology for high-density exothermic risers and precision-controlled insulating risers to the United States. Joy-Mark offers a comprehensive catalog of foundry feeding aids through direct sales and a national distribution network covering the U.S., Canada, Mexico, with growing export sales to South America and Europe.