Companies by Prefecture
- Hokkaido 54 companies
- Aomori 13 companies
- Iwate 10 companies
- Miyagi 24 companies
- Akita 10 companies
- Yamagata 13 companies
- Fukushima 26 companies
- Ibaraki 29 companies
- Tochigi 38 companies
- Gunma 30 companies
- Saitama 91 companies
- Chiba 70 companies
- Tokyo 1619 companies
- Kanagawa 106 companies
- Niigata 28 companies
- Toyama 27 companies
- Ishikawa 42 companies
- Fukui 11 companies
- Yamanashi 8 companies
- Nagano 44 companies
- Gifu 38 companies
- Shizuoka 55 companies
- Aichi 118 companies
- Mie 23 companies
- Shiga 29 companies
- Kyoto 17 companies
- Osaka 103 companies
- Hyogo 49 companies
- Nara 10 companies
- Wakayama 4 companies
- Tottori 9 companies
- Shimane 9 companies
- Okayama 20 companies
- Hiroshima 28 companies
- Yamaguchi 24 companies
- Tokushima 7 companies
- Kagawa 43 companies
- Ehime 18 companies
- Kochi 7 companies
- Fukuoka 71 companies
- Saga 14 companies
- Nagasaki 10 companies
- Kumamoto 14 companies
- Oita 18 companies
- Miyazaki 12 companies
- Kagoshima 14 companies
- Okinawa 37 companies