UST Umweltsensortechnik GmbH, founded in 1990 and headquartered in Geschwenda, Germany, is a leading developer and manufacturer of high-temperature ceramic sensors and sensor systems. The company specializes in robust sensor solutions for harsh environments, including exhaust gas, combustion, and industrial process monitoring. Its core product portfolio includes temperature sensors (thermocouples, resistance thermometers), pressure sensors, soot sensors, and flow sensors, all based on advanced ceramic multilayer technology. UST pioneered the use of ceramic multilayer substrates for sensor elements, offering exceptional thermal stability, chemical resistance, and mechanical strength. These sensors are widely used in automotive exhaust aftertreatment, industrial boilers, furnaces, and chemical plants. In 2022, UST was acquired by Niterra Co., Ltd. (formerly NGK Spark Plug), strengthening its global reach and R&D capabilities. The company holds numerous patents in thick-film ceramic sensor technology and remains a key supplier to major automotive OEMs and tier-1 system integrators. UST operates state-of-the-art cleanroom facilities and is certified to IATF 16949 and ISO 14001, ensuring high reliability and environmental compliance.