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Nihon Dempa Kogyo Co., Ltd. (NDK) was founded in 1948 as a company specializing in the manufacture of quartz crystal devices with a business philosophy of “contributing to the prosperity of society and world peace through our service to customers.”
NDK is a major manufacturer and supplier of crystal devices with a vast array of applications that are essential components in virtually all electronic equipment. The Company is also applying its crystal technologies to sensors and a full spectrum of new high-value-added components and products with the aim of achieving sustained business growth as a comprehensive manufacturer of frequency control devices.

NDK Sayama Plant


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