1. The document describes FLS LPI Liquid Photo imageable Solder Mask Touch Up Paint Ink Pens, which are technical pens used to retouch solder mask on printed circuit boards and protect circuit board traces, components, and electronics from shorts, moisture, abrasion, and other hazards. 2. The pens provide a hard, durable coating with high dielectric strength that helps prevent arcing and shorts while offering excellent coverage and chip resistance. 3. The pens can be used for circuit board manufacturing, data communications, aerospace, instrumentation, controls, and general maintenance and repair applications.