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Group Companies About Us

Shinei Seiko Co., Ltd.

Shinei Seiko Co., Ltd.

Shinei Seiko specializes in precision machining using NC lathes and machining centers.
We provide high-quality components for diverse industries, including fluid control, hydraulics,
semiconductor manufacturing, and defense.

Company Name

Shinei Seiko Co., Ltd.

Location

3730-33 Oaza Yamae, Chikushino City, Fukuoka, 818-0003, JAPAN

Capital

10 million JPY

Established

July 1, 1971 (Founded in May, 1960)

Number of Employees

11 (as of April 30, 2024)

Main Businesses

Processing of parts for precision machinery

WinTech Co, Ltd.

WinTech Co, Ltd.

WinTech offers integrated production from cutting to grinding, delivering high-quality parts with short lead times.
Their expertise in cylindrical grinding is highly regarded and trusted for F1 engine components.

Company Name

WinTech Co, Ltd.

Location

11400-1021 Aza Harayama, Tamagawa, Chino City, Nagano, 391-0011, JAPAN

Capital

3 million JPY

Established

February 17, 2000

Number of Employees

11 (as of April 30, 2024)

Main Businesses

Cutting and grinding of various precision machine parts

KONNOPRO Co., Ltd.

KONNOPRO Co., Ltd.

KONNOPRO specializes in manufacturing turbo molecular pump components for semiconductor
equipment and bit shanks for civil engineering. By leveraging advanced CNC machining and in-house tooling design, they provide high-quality parts at competitive prices.

Company Name

KONNOPRO Co., Ltd.

Location

1165 Yoshihashi, Yachiyo City, Chiba, 276-0047, JAPAN

Capital

10 million JPY

Established

April 15, 1950 (Founded in 1933)

Number of Employees

25 (as of April 30, 2024)

Main Businesses

Precision machining of parts used in turbomolecular pumps
Manufacturing of bit shanks

Ohyama Foods Machinery Co., Ltd.

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With over 100 years of expertise, Oyama Foods Machinery specializes in equipment for rice cakes and snacks. We provide integrated solutions—from plant design to consulting—supporting global food culture with agility.

Company Name

Ohyama Foods Machinery Co., Ltd.

Location

2-29-30 Kandaiji, Kanagawa-ku, Yokohama-shi,
Kanagawa, 221-0801, JAPAN 

Capital

20 million JPY

Established

June 6, 1951 (Founded in March 3, 1923)

Number of Employees

39

Main Businesses

Design, manufacturing, and maintenance of machinery for mochi, rice crackers, and snack foods.