Zhongxu Microelectronics Co., Ltd.
Manufacturer of magnetic sensors using series Hall effect sensors. From China.
http://www.zhongxu.com/

Melexis Microelectronic Systems
Melexis Microelectronic Systems manufactures microelectronic integrated systems, ICs, Hall-effect Position Sensors, Sensorless BLDC Motor Drivers, LED driver ICs, rfid tags and more for the automotive industry.
http://www.melexis.com/

ChenYang Technologies GmbH & Co. KG
Hall ICs, HKZ101, HKZ101S, HKZ121, 2AV16A, Gaussmeter, Oscilloscope,2AV51A, 2AV56, 2AV63, 2AV31E-J,Hall Effect gear tooth sensors, GT sensors, Hall Effect vane sensors, Hall effect current Sensors, Hall Switch
http://www.cy-sensors.com

Sensorex
Sensorex quality pH Electrodes, ORP Electrodes, Conductivity Sensors, non-contacting Toroidal Conductivity Sensors, dissolved oxygen sensors, and Chlorine Dioxide Sensors. Sensorex over 30 years experience manufacturing a wide array of electrochemical sensors. Find the right sensor for your application.
http://www.sensorex.com

IFM Efector, Inc.
ifm efector - Sensors and Controls
http://www.ifmefector.com/

INFRA Electronic Sensors
Manufacturing photoelectric sensors, inductive and capacitive sensors, thru beam photoelectric sensors, magnetic and connectors. From Italy.
http://www.infrainternational.com/prodotti.htm

SIE Sensors
Manufacturers of a wide range of capacitive sensors. Many specialty sensors, including flexible, high temperature and analog capacitive sensors.
http://www.sie-sensors.com/

Smith Systems Inc.
Smith Systems manufacturer of superior temperature sensors, atex electronics, flow sensors, speed sensors, proximity sensors, cable harnessing, smart sensors, automotive racing sensors, atex electronics certified sensors
http://www.smith-systems-inc.com/

Sensor Solutions Corp
Sensor Solutions manufactures speed sensors, hall effect sensors and sensors for proximity, direction, linear and rotational position, height, and flow. Dynamic site lists hundreds of options.
http://www.sensorsolutions.info/

Gentech International Ltd.
Gentech are manufactures of Liquid Level Sensors, Flow Switches and Position Sensors, Matching customer applications by delivering standard or specially designed solutions.
http://www.gentechsensors.com