Keystone Technology

We develop and manufacture cultivation system for vegetable factories.
"LED vegetable garden", one of our products, requires very limited space, reduces environmental load, and maintains sustainable agricultural production. The LED vegetable garden is operated in an office building in the Yokohama sightseeing area and organic vegetables grown there are provided at restaurants nearby. During the plant tour you can view how we grow chemical-free vegetables with LED lights in the office.



Keystone Technology Inc.
Meiwa Bldg. 2F, 5-68-5 Ohta-machi, Naka-ku, Yokohama-shi, Kanagawa-ken,231-0011 Japan

Bashamichi station (Subway Minatomirai line): Exit 5, 3 min. walk
In front of Yokohama Heiwa Plaza Hotel


Admission fee Free
Working days and hours Monday to Friday between 10:00am and 5:00PM
Closings Saturday, Sunday, public holidays, year end & new year holidays
Visitor capacity 1 to 8
Time required for a tour 1 hour
Language Japanese only
Reservation Required
Please use the enquiry form on our web site, or mail to:
Other conditions - Application, enquiry, tour are to be handled in Japanese only.
- Photography is not allowed during the tour.


Tel: 045-222-3117