AMWEI Thermistor Sensor design and manufacture PTC & NTC thermistors (THERMally sensitive resistors), thermistor temperature sensors probe. AMWEI started Thermistors business back in 1999, thorough successive hard work of a group of specialists in ceramic sensitive material, welding technology, packaging technology. They own core know-how in powder formula and key production technics.

INFICON provides industry-renowned tools for HVAC/R service, including refrigerant and combustible gas leak detectors, combustion analyzers, refrigerant charging scales, refrigerant recovery machines, and vacuum pumps. INFICON is a major provider of innovative instrumentation, critical sensor technologies, and advanced process control software that enhance productivity and quality in sophisticated industrial vacuum processes.