For over 20 years, we have developed marking solutions for quick and easy metal marking. Mark and Etch Metal Surface Fast and Easy. With electrochemical marking, you can mark and label your products in just a few seconds, whether you're making knives, tools, or machine parts for the aerospace industry. What is electrochemical marking/etching? - Electrochemical marking is the fastest method for permanent marking of conductive metal surfaces. It produces a sharp, clean, and attractive mark without damaging the material in a matter of seconds.