Company InformationCompany Overview

Head Office (Tokyo)

10F, Techno-Port Taiju Seimei Building, 2-16-2 Minamikamata, Ota-ku, Tokyo 144-0035, Japan
Get Directions
TEL:81-3-3734-1212 FAX:03-3734-1222

Nagano Factory

3500-3 Toyonomachi, Okura, Nagano City, Nagano 389-1102
Get Directions
TEL:026-225-9118 FAX:026-251-5006

Central Region Sales Office

2F Hyakujyu Building, 3-149 Komaki, Komaki City, Aichi 485-0041
Get Directions
TEL:0568-74-7277 FAX:0568-74-7278

Osaka Sales Office

6F Matsuoka Building, 27-14 Asahimachi, Suita City, Osaka 564-0027
Get Directions
TEL:06-6383-4410 FAX:06-6319-1437

Kyushu Region Sales Office

1007A NEW GAEA Building Tenjin, 1-1-25 Takasago, Chuo-ku, Fukuoka City, Fukuoka 810-0011
Get Directions
TEL:092-753-4777 FAX:092-753-4778

Seiken Co., Ltd. specializes in the development, manufacturing, and sales of advanced testing and inspection solutions for the electronics and semiconductor industries. Our primary offerings include:

• Spring probes and contact terminals for precision electronic testing.
• Probe cards designed for semiconductor wafer inspection.
• High-density IC sockets for device testing.
• Functional test jigs for a wide range of printed circuit boards.
• Inspection heads and test equipment for FPD cells/modules and OLED panels.
• Contract-based manufacturing of engineering plastics and high-precision metal components.
• Assembly services and brokerage for fine wiring and micro-assembly processes.

Head Office / Factory

30-1 Kuiseshita, Chikuma-shi, Nagano 387-0011, Japan

Ueda Office (Nagano)

Hanazono Towa Building 2-C, 2-1-20 Chuo-Nishi, Ueda City, Nagano 386-0023, Japan

• PCB layout and circuit design.
• Electronic component mounting and assembly.
• Precision welding services (e.g., argon welding) and more.

• Design, manufacturing, and supply of sockets for crystals, MEMS, sensors, and semiconductor devices.
• Development of specialized equipment for these components.

• Manufacturing of inspection jigs for printed circuit boards testing.
• Supply of Parts for Semiconductor and LCD Manufacturing Equipment.