Stewart Superior is the industry leader for ink development, ink technology and ink pads for crafting. Our ink research and development plant - ProColorflex in Hayward, California has a full lab and extensive staff of chemists that formulate specialty inks for the flexographic printing industry. That’s the printing of stickers, labels, boxes and more. These are very demanding applications for ink and they use photopolymer printing plates. Stewart Superior’s craft inks are direct results of that science, research and technology.