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Tibbetts Industries, Inc.
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Developer and manufacturer of miniature electromagnetic and electro-acoustical transducers typically used by the hearing aid, medical device, and security industry.
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Chintele Quartz Technology Co Ltd
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A Chinese manufacturer of piezoelectric quartz, quartz products and single crystal optical products for use in the telecommunications and general time and frequency industries.
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Ningbo East Electronics
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Chinese Manufacturer of piezo ceramic electroacoustic products such as buzzers, ringers, alarms, transmitter and receivers.
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