Grayhill Inc.

Grayhill, Inc. is a leading manufacturer of electronic components including, optical and mechanical encoders, rotary switches, joysticks, surface mount and thru-hole DIP switches, rotary DIP switches, toggle switches, standard & custom keypads, custom operator interface front panels, I/O modules, and mounting racks.

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HK GST LIMITED is specialized in electronic components that perfectly meet your needs No matter the component is hard-to locate or less in massive quantties with urgent need, HKGST are prepared to fulfill your demands.