About us

Tongfang Guoxin Electronics Co.,Ltd, short for JYEG, founded In 1990, specializes in designing, manufacturing and selling of quartz crystals frequency components and sapphire photoelectric devices.
From quartz crystal bars growing to blanks producing and finished products assembling, final  testing, all the processes are done by ourselves, this realizes totally control of product quality, production cost and delivery by ourselves. We have a 80 people R&D team, and we own more than 30 patents. We can supply customized products of all packages.
Hope our products can make you satisfied, and our service make you feel easy.



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