General Electric, AMETEK Process Instruments, Emerson Electric, Dr gerwerk, ABB Measurement & Analytics, TESTO, Honeywell International, IMR-Messtechnik, Bacharach, TECORA, Wuhan Cubic Optoelectronic, Fer Strumenti, Codel International, Kane International, KIMO, Seitron, Nova Analytical Systems, Adev, ENOTEC, Eurotron Instruments