About us


Company Name R-DEC Co., Ltd.
Head Office Location
1-16-10 Ninomiya, Tsukuba, Ibaraki 305-0051

TEL : 029-858-0211 / FAX : 029-855-9877

Tokyo Office Location
Hongo Kobayashi Build. 5F, 3-15-4 Hongo Bunkyo-ku, Tokyo 113-0033

TEL : 03-5805-0330 / FAX : 03-5805-0331

Foundation June 1st, 1988
Number of Employees 35 (consolidated: 70)
Capital JPY 32,450,000
Board Member Chairman & Representative Director Tomoaki Sasaki
President & Director Kenji Nakayama
Main Bank Tsukuba Namiki Branch, Joyo Bank
Tsuchiura Branch, Resona Bank
Tsukuba Branch, Mitsui Sumitomo Bank
Business Description

We provide products that are necessary for researchers and engineers, in their pursuit of cutting-edge science and technology, that will create the future.

  • ・We are selling vacuum-related products, measuring instruments and components from more than one hundred suppliers, including overseas leading suppliers’ measuring instruments, and components used for semiconductor development and manufacturing.
  • ・Our self-developed products, such as thin-film deposition equipment, analysis equipment, and vacuum transfer equipment, which utilize vacuum technology we have cultivated since our establishment, aim to improve efficiency and ease-of-use by combining them with automatic control software. We can also flexibly respond to needs for custom-made products.
Products Catalog PDF



R-DEC Co., Ltd. was founded at Umezono, Tsukuba, Ibaraki
The company was established to provide the vacuum systems and technology to the R&D field.


R-DEC head office was relocated to 1-16-10 Ninomiya, Tsukuba


AVC Co., Ltd. was established.


RHEED was designed and developed in-house and sales started.
Online shop launched.


ELC Co., Ltd. was established as the software developer and control equipment manufacturer.


k-Space - R-DEC became a distributor of k-Space products.


Veeco - R-DEC became the sole representative of Veeco components.


Process Integration Center (PIC) was established in Koya, Tsukuba as a demonstration facility of k-Space products.


Thermal Desorption Spectroscopy System for Hydrogen Analysis was developed with NIMS and obtained a joint patent. The system was commercialized and sales started.


R-DEC KOREA was established as a result of business partnership.


Tokyo Branch was opened at 3-Chome Hongo, Bunkyo-ku, Tokyo.