NDK

Nihon Dempa Kogyo CActivities:Production and sales of Crystal-Related products such as Crystal devices (e.g. Crystal Units, Crystal Oscillators, Crystal filters), Ultrasonic Transducers, Synthetic Quartz and Crystal Blank.o., Ltd. (NDK) 创立于 1948 年，秉持“服务为先、天下为公、世界和平”为原则