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HCD Research Limited
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Design, develop and manufacture crystal oscillators and frequency and EMC equipment. Online product specifications and service capability statement.
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Materials Corp
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A 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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Nihon Dempa Kogyo Co., Ltd.
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Manufacturer of quartz crystal products, crystal units, VCXO, TCXO, TC-VCXO, SAW devices, crystal filters, optical components and ultrasonic transducer.
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OMIG S.A.
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Manufacturer of quartz filters and quartz crystals for TCXOs, VCXOs, and OCXOs, and vacuum depositing process control quartz crystals. Site in English and Polish, and include product specification ranges and PDF part catalogs.
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