We Link High Speed with Reliability.

About us

Yuetsu Seiki Co., Ltd. is a developer and manufacturer of high frequency RF coaxial connector and precision machining parts.

Our products, developed for wide range of radio frequency /micro wave application at wireless system, especially milli-wave connector for optoelectronic devices and testing equipment uses, supply richer experience to all RF coaxial connector users with quality and accessibility .

Founded in 1979, we developed a series of RF coaxial connector such as: UB145,0.8mm,1.0mm,microSMP, SMPM, SMP, V(1.85), K(2.92), HRA, BMA, MMCX, MCX, SMA, N, SMB, TNC, BNC, F and M at same time, we also supplied numerous.

By integrating coaxial connecting technology and precision machining technology into a RF coaxial connector, we provide significant cost and performance advantages to our customers.

Corporate Mission

Yuetsu Seiki will continually challenge to improve connecting technology, By doing so, we aim to contribute to prosperous networked society and provide happiness to all our stakeholders.

Corporate Overview

Corporate name Yuetsu Seiki Co.,Ltd
Established December, 1979
President Shigeo Iizuka
Business Description Manufacturing and sale of coaxial connector, cable assemby with coaxial connector, and precision machining parts.
Employees 74
Tokyo office 2-16-5 Mizonokuchi, Takatsu-ku,Kawasaki-shi      Kanagawa 213-0001 Japan
TEL: 044-850-8811
FAX: 044-850-8812

ISO 9001 Certificated (link-japanese)

ISO 14001 Certificated (link-japanese)


Please feel free to contact us on any further information, inquiry request, and technical support.

email :
TEL :+81-44-850-8811
FAX :+81-44-850-8812