The following companies are subsidiares of MKS Instruments: Alter Power Systems, Applied Science and Technology, Atotech Manufacturing Inc., Beijing Newport Spectra-Physics Technologies Co. Ltd., Brooks Automation - Granville-Phillips, Compact Instrument Technology, D.I.P., ESI China Inc., ESI Electronic Equipment Shanghai Co. Ltd., ESI International Corporation, ESI Japan K.K., ESI Korea Inc., ESI Vietnam Company Limited, Electro Scientific Industries, Electro Scientific Industries Europe Ltd, Electro Scientific Industries GmbH, Electro Scientific Industries Inc., Electro Scientific Industries Singapore Pte. Ltd., Emerson - ENI, EquipNet, High Q Laser GmbH, IPC Fab Automation, Ion Systems Inc, MKS Denmark ApS, MKS German Holding GmbH, MKS Instruments China Company Ltd., MKS Instruments Deutschland GmbH, MKS Instruments ESI Switzerland GmbH, MKS Instruments Holdings Ltd, MKS Instruments Hong Kong Limited, MKS Instruments Israel Ltd., MKS Instruments Italy S.r.l., MKS Instruments Mexico S. de R.L. de C.V., MKS Instruments Singapore Pte. Ltd., MKS Instruments UK Limited, MKS Japan Inc., MKS Korea Ltd., MKS Spectra Holdings Limited, MKS Taiwan Technology Limited, Micro-Controle Spectra-Physics S.A.S., Micronor LLC, Newport Corporation, Newport Corporation, Newport Instruments Canada Corporation, Newport Laser Holding GmbH, Newport Ophir Holdings Ltd., Newport Opto-Electronics Technologies Singapore Pte. Ltd., Newport Opto-Electronics Technologies Wuxi Company Limited, Newport Spectra-Physics B.V., Newport Spectra-Physics GmbH, Newport Spectra-Physics Limited, Novx Corp, On-Line Technologies, Ophir Japan Ltd., Ophir Optics S.R.L., Ophir Optronics Ltd., Ophir Optronics Solutions Ltd., Ophir Spiricon Europe GmbH, Ophir-Spiricon LLC, Photon Control Inc, Photon Control Inc., Photon Control USA Inc., Plasmart, Precisive, Spectra International, Spectra-Physics K.K., Telvac Engineering, Tenta Technology, Umetrics, V-Gen Ltd., Wenzel Instruments, and Yield Dynamics.
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