Process control and instrumentation, pressure sensors, flow controllers, gas analyzers, lasers, and plating systems, is the business of MKS Instruments, Inc., a global provider serving semiconductor-manufacturing, electronics, and specialty-industrial customers. Founded in 1961 and headquartered in Andover, Massachusetts, it runs three segments, Vacuum Solutions (VSD), Photonics Solutions (PSD), and Material Solutions (MSD), holds ISO 9001 and ISO 14001 certifications, and operates in 12 countries with plants in the US, China, Singapore, and Mexico. Its Indian arm, MKS Instruments (India) Pvt. Ltd. in Bengaluru, supports sales and service for semiconductor and industrial markets.