3S Co., Ltd

3-Sci

A H Enterprises Inc. (AMFLOW)

Aarohi Embedded Systems Pvt. Ltd

ABB

ABM Sensor Technology, Inc.

ADZ NAGANO GmbH 

Agar Corporation

Alsensio GmbH

AMETEK Magnetrol

Wilcoxon Sensing Technologies

Analog Devices

Anderson Instrument Co., Inc.

Anhui Luoqian Control System Co., LTD.

Anhui Tiankang (Group) Shares Co., Ltd

Aparian Inc.

Aplisens  S.A.

Armstrong International

ASA S.r.l.

Ashcroft

Atomhorizon Electric

Auma

Autonics

Azbil Corporation

Badger Meter

Bahra Advanced Cable Manufacture Co. Ltd

Baker Hughes Oilfield Operations LLC

Baldota Control and Equipments Pvt Ltd

Barksdale Control Products

Bass Olcme Enstrumanlari Ltd. Sti.

Baumer

BD SENSORS GmbH

Beamex Oy Ab

Beckhoff Automation GmbH & Co. KG

BEIJING CONNETECH ELECTRONICS TECHNOLOGY CO., LTD.

Beijing Consen Technologies Co.,Ltd.

Beijing ConST Instruments Technology Inc.

BEIJING FAR EAST INSTRUMENT CO.,LTD

Beijing Fipor Atal Meter Co Ltd

GODA

Beijing Huade

BEIJING RIPENESS SANYUAN INSTRUMENTATION CO.,LTD

Beijing Spake Technology Co., Ltd

Beijing Yanshan Times Instrument CO., LTD.

Beijing ZhongRuiZhiCheng Technology Co., Ltd.

BEKA Associates

Bela Instruments

Belden Inc.

Benway Consulting LLC

BERNARD CONTROLS

Berthold Technologies

Bilfinger Engineering & Maintenance GmbH

Binder GmbH

Bopp & Reuther Messtechnik GmbH

Brooks Instrument

BTG Instruments AB

Bürkert Werke GmbH & Co. KG

BusCorp Inc.

Canada Sensors Technology Inc.

Centero

Chang Sung Ace Co., Ltd

Chengdu Action Electronics Joint-Stock Co., LTD

Chongqing ChuanYi Automation Co. Ltd 

Chongqing Chuanyi Control System Co., Ltd. Shanghai Branch

Chongqing Chuanyi Instrument No. 17 Factory Co., Ltd.

WECAN PRECISION INSTRUMENTS

Chromalox

CI Systems Ltd.

CiDRA Corporate Services LLC

Clark-Reliance Corp.

EMIS CJSC

CNOOC Safety & Technology Services Co.,Ltd

CodeWrights

CONTROL DATA SYSTEMS

Cords Cable Industries LTD.

Coto Measurement System (Shanghai) Co. Ltd.

Crowcon Detection Instruments Limited

Daehan Sensor Co Ltd

Dandong Top Electronics Instrument Group Co. Ltd

Dekoron Wire & Cable LLC

Delta Controls Corporation

Delta Mobrey Ltd

Delta-Phase Electronics

Denso Wave Incorporated

Det-Tronics

INCANA Instrument Co.,Ltd

Dinel, s.r.o.

Divigraph

Doosan HF Controls Corporation

Draeger Safety AG & Co. KGaA

Autrol by Duon System Co., Ltd.

DVG Automation SpA

Dynisco

E. D. Engineering, Inc.

Eaton - MTL Product Line

Electro-Chemical Devices

Elgaz

Elimko Electronic Production & Control Co. Ltd.

Elmetro Group, Ltd

embeX GmbH

Emerson Automation Solutions

EMKO HOLDING s.r.o.

Endress+Hauser

Enelsan Endustriyel Elektronik San. A.S.

ENOTEC GmbH

ERIS, Limited Liability Company

ESP Safety, Inc.

Eureka Industrial Equipments Pvt. Ltd.

EUROMAG INTERNATIONAL S.R.L.

FELLOW KOGYO CO., LTD.

Festo SE & Co. KG

Fieldbus Inc.

Fieldbus International AS

FineTek Co.,

Fire and Gas Detection Technologies Inc.

FLEXIM

Flowline, Inc.

Flowserve

Fluid Components International LLC

Fluidwell

Fluke Corporation

FOCUS-ON

Forbes Marshall

Fraunhofer IOSB

FSUE SPA "Analitpribor"

Fuji Electric Co., Ltd

G.M. International S.r.l.

GASDNA Co., LTD

Gasensor Technology Pte Ltd

Gastech

GASTRON

GEFRAN

GEMU

General Electric

Georg Fischer Signet

GLOAZURE CO., LTD.

Gneuss Kunststofftechnik GmbH

Goldcard

GP:50 Ltd.

HACH Company

Hamilton Bonaduz AG

HEST

Hangzhou Hollysys Automation Co. Ltd.

Hangzhou SDIC Microelectronics Inc.

Hanwei Electronics Group Corporation

Harbin East Annunciator Equipment Development co.,Ltd

Harold Beck & Sons, Inc.

Hawk Measurement Systems Pty. Ltd.

Heinrichs Messtechnik

Henan Chicheng Electric Co., Ltd

Hengyang Northern Photoelectric Information Technology Co.Ltd

HIMA Paul Hildebrandt GmbH

Hitachi High-Tech Solutions

Hitachi, Ltd.

HK Instrument (Dalian) Co., Ltd

Hoentzsch GmbH

Hoffer Flow Controls Inc.

Honeywell International

Hongrun Precision Instrument Co.,Ltd, Shunchang Fujian

Huaxin Instrument (Beijing) Co., Ltd.

HYDAC Electronic GmbH

IDEX

Ifak Technology+Service GmbH

IGM-Detector, Co. Ltd.

IMTEX Controls

Inor Process AB

ITEI

Intergraph Corporation dba Hexagon PPM

Isoil Industria S.p.a.

JEMIMA

Jiangsu Weilang Electronic Technology Co.Ltd

Jiangsu Xinhui Measurement and Control Technology Co., Ltd

Joint Stock Company "Albatros"

Limaco

JSC EPF "SIBNA"

Teplokontrol

Vzljot

JUMO

JUMO GmbH & Co. KG

Kaifeng Instrument Co Ltd

Kaneko Sangyo Co., Ltd.

KEI INDUSTRIES LIMITED

KEM Kueppers Elektromechanik GmbH

Kinetrol

KMITL

Klay Instruments

Knick GmbH & Co. KG

Kobold Messring GmbH

Kockumation Group

Kongsberg Maritime AS

Koso Engineering Co. Ltd

KROHNE Messtechnik GmbH

KSB MIL Controls Limited

KSB

L&J Engineering Inc.

LABOM GmbH

Lapp India Pvt Ltd

Fieldbus Center at Lee College

LEONI Cables Solutions India Private Ltd.

NPP SENSOR LLC

Linyi Anfu Electronics Co., LTD

LLC Scientific Production Association AGAT

ELEMER

LumaSense Technologies GmbH

M&M Software

Macro Technology Instruments Co., Ltd.

Magma Engineering LTD

Manometer Factory LLC

Marlew S.A.

Matsushima Measure Tech Co., Ltd.

MECON GmbH

MESCO Engineering

Metal Samples Company (A Division of Alabama Specialty Products, inc)

Metroval Controle de Fluidos Ltda

Mettler-Toledo GmbH

Mezolen Instrument (Changzhou) Co., Ltd.

Micro Sensor Co., Ltd.

Microcreative Tech. Co., Ltd.

Microcyber Corporation

Microflex

Micropack (Engineering) Ltd

MESC

MIRAX LLC

MISTRAS Group, Inc.

MITSUBISHI ELECTRIC

Mitsubishi Heavy Industries, Ltd.

Molex

Moore Industries-International, Inc.

Motoyama Eng. Works, Ltd.

MSA

M-System Co. Ltd.

Muesen Technik GmbH

New Power

National Instruments

NEO Monitors AS

New Cosmos Electric Co., Ltd

Nippon Gear

NIVELCO Process Control Co.

Nivo Controls Pvt. Ltd.

NIVUS

NOAH ACTUATION CO.,LTD.

IMI Precision Engineering

NOSHOK

SMAR

NOVUS Produtos Eletronicos Ltda

NPP KuibishevTelecom-Metrology

OGMM

OOO NPO Vakuummash

OKB VEKTOR

optek-Danulat GmbH

Optronics Technology

Otis Instruments

OVAL Corporation

PACTware Consortium

Pepperl+Fuchs SE

Petrobras

Phase Dynamics, Inc.

Phoenix Contact

Piezus Ltd

Point, LLC

POWERFLOW

Power-Genex Ltd.

Pozhgazpribor LLC

PR electronics A/S

Precision Engine Controls Corporation

Prest Measurement and Control Technology (Tianchang) Co., Ltd.

Presys

Process Level Technology, Ltd

ProComSol, Ltd.

Prosense

PT Korosi Specindo

Pulsar Measurement

Bitherm

Pyromation LLC

QOT Inc.

R. Stahl GmbH

RAMCRO S.p.A.

Georgin

Relcom

Research and Production Complex "VIP", JSC (AO "NPK VIP")

GKS

REXA, Inc.

Rheonik

Rhosonics Analytical BV

RIIT Ltd.

Riken Keiki Co., Ltd.

Rittmeyer AG

Rockwell Automation

Rohrback Cosasco Systems

Ronan Engineering

Rotex

Rotork Controls

Rotork YTC Limited

Sage Metering, Inc.

Samil PNU

SAMSON AG

Satron Instruments Inc.

SBEM Pvt. Ltd.

ScanSense AS

Schneider Electric

SME “TEC”, Ltd.

SENKO

Sense Electronica Ltda.

Cameron Technologies

Seojin Instech Co., Ltd

Shandong Dongrun

Shanghai Aegis Industrial Safety Corporation

Shanghai Analog & Digital Instrument Co., Ltd

Shanghai Automation Instrumentation Co.,Ltd

CHENZHU INSTRUMENT

Shanghai Guanghua Instrument Co.,Ltd.

Shanghai Rocksensor Automation Co., Ltd.

Shanghai Welltech Automation Co., Ltd

Shanghai Xingshen Instrument Co.,Ltd

Shanghai Yinuo Instrument Co., LTD

Shell Global Solutions

Maxonic Automation

SHENYANG LANSHEN INSTRUMENT CO., LTD

Shenyang Vibrotech Instruments INC

Shenzhen ExSaf Electronics Co., Ltd.

Shenzhen MORC Controls Co.,Ltd

Nuoan

SICK Engineering GmbH

Siemens AG

SINIER(NANJING)PROCESS CONTROL CO.,LTD.

Sinoto Instrument (SU ZHOU) Co., LTD

SkoFlo Industries, Inc.

Smart Embedded Systems Inc.

SMARTY LLC

SMC Corporation

Softdel Systems Pvt Ltd - not one on memb. app

Softing AG

SpearIx Technologies, Inc.

Spectrum Controls

Spirax Sarco

Springfield Research Corp.

S-Products

State Nuclear Power Automation System Engineering Company, LTD

STI Srl

Suzhou Beite Smart Instrument Co., Lt

SUZHOU BONRAY MEASURE & CONTROL EQUIPMENT CO.,LTD

SWAN Analytical Instruments

SWISA Instrument Inc.

Syscor Controls & Automation Inc.

Taian Panran Measurement & Control Sci-Tech Co., Ltd

Tecfluid S.A.

Tefulong (Shanghai) Technologies Co., Ltd.

TEKAB CO, LTD.

Tek-Trol

Telebyte, Inc.

Teledyne

Temposonics LLC

TERMOTRONIC LLC

TERRANOVA

Okonite

The Open Group - The Open Process Automation Forum

Thermal Instrument Co.

Thorsis Technologies GmbH

TISSIN

TLV

TOKYO KEIKI INC.

TOKYO KEISO

TOSHIBA

Toshniwal Industries Private Limited

Tracerco

Tyco Fire & Security GmbH

UBC Intelligent Technology (Xi'an) Co., Ltd

Uniphos Envirotronic Pvt. Ltd.

United Electric Controls

Universal Flow Monitors

UFRGS

Utthunga

UWT GmbH

Vaisala Oyj (didn't list one)

Val Controls A/S

Valcom Co., Ltd

Valmet, Inc.

Valtek Sulamericana

VEGA Grieshaber KG

Vivace Process Instruments

VORTEK FLUID INC.

Walsn

Waseda University

Welkin Co., Ltd.

WeMetro Industrial Control Equipment Co. Ltd.

Westcontrol AS

Meriam Process Technologies

Westlock Controls

Wetcon

WIKA  Alexander Wiegand SE & Co. KG

WISE CONTROL INC

Wuxi GLT Safety Equipment Co., Ltd

Wuxi Kunlun Fuji Instruments Co., Ltd.

Xi'an Dechuang Electrical Technology Co.,L

Xi'an Dongfeng Machinery & Electronic Co., Ltd

Xian International Instrument Measure & Control Co.Ltd

Yangzhou Electric Power Equipment Manufacture Factory CO,LTD

Yangzhou Hengchun Electronics Co., Ltd.

Yokogawa Electric Corporation

Zettaone Technologies

Zhejiang AoXin Instrument Co., Ltd.

Zhejiang Diyuan Instrument Co., Ltd

Zhejiang Hengjun automation equipment Co., Ltd

Zhejiang Jinghua Measurement and Control Equipment Co., Ltd

Zhejiang JingLiang Automation Co., LTD

ZHEJIANG JINLONG AUTOCONTROL EQUIPMENT CO.,LTD.

Zhejiang Jinyee Instrument Co., Ltd.

Zhejiang SUPCON Technology Co., Ltd.