ESI is a brand within the MKS Instruments Equipment Solutions Division. ESI systems deliver market-leading solutions for Flexible PCB laser processing, high-speed MLCC testing, and CO2-laser-based systems HDI PCB and IC substrate manufacturing. ESI solutions help manufacturers optimize production of the materials, components and systems that are an integral part of the electronic devices in use today. They deliver greater flexibility and a higher degree of processing control, enabling customers to incorporate a wider range of materials into their production processe