Kett Electric Laboratory (Japan)
Sartorius AG (Germany)
Mettler-Toledo International Inc. (US)
Spectrasensors Inc. US)
Metrohm AG. (Switzerland)
Arizona Instrument LLC (US)
Shimadzu Corp. (Japan)
A&D Co. Ltd (Japan)
Thermo Fisher Scientific Inc. (US)
Brookhuis Applied Technologies (Netherlands)
Ametek Inc. (US)
Michell Instruments Inc. (US)
General Electric Co. (US)
PCE Instruments. (Norway) and Adam Equipment Inc. (UK)