IMG is the original Electromark Company, one of the creators of the electromarking process. Since 1951, weve served the aerospace, defense, machine tool, and auto industries, to name just a few. We know the process and we pride ourselves in state of the art equipment, superior customer service, and competitive pricing. Electromarking is a technique used to mark conductive metal surfaces. It produces a sharp, clean impression without damaging or distorting the metal. Many industries use it to produce serial numbers, date codes, trademarks, and measurement markings, etc. Small businesses and hobbyists/artists mark everything from knives and tools to personal articles like sports equipment and musical instruments. Electrochemical etching starts by first creating an image on a stencil. The image is then transferred to the metal surface with electrolyte and electric current. Electrochemical marking can be used to mark hardened, thin, or already assembled metal parts. On most metals, you can create either a black or dark mark on AC or a deeper white or frosted mark on DC.