| Meikousha Co., Ltd. |
Electrical and plumbing work |
| Kakusokukeisou Co., Ltd. |
Electrical work |
| Jinnouchikoumutenn Co., Ltd. |
Civil engineering, power transmission line, and electrical work |
| Fukuoka densetsu.Co., Ltd. |
Electrical and plumbing work |
| Fukuto densetsu Co., Ltd. |
Electrical, telecommunications, and facility work |
| Chikugo densetsu Co., Ltd. |
Electrical and telecommunications work |
| Fukusetsu Co., Ltd. |
HVAC and plumbing work |
| Kitasetsu Co., Ltd. |
Electrical, HVAC and plumbing work |
| Oita densetsu Co., Ltd. |
Electrical work |
| Fusokogyo Co., Ltd. |
Facility work and air conditioning equipment sales |
| Miyaei Co., Ltd. |
Electrical and plumbing work |
| Minamikyushu densetsu Co., Ltd. |
Electrical work |
| Kaei densetsu, Co., Ltd. |
Electrical work |
| Kyukinsetsubikogyo Co., Ltd. |
Facility work |
| Yuei densetsu Co., Ltd. |
Electrical work |
| Kuma densetsu Co., Ltd. |
Electrical, plumbing, firefighting facilities, and telecommunications work |
| Higo-setubi Co., Ltd. |
HVAC and plumbing work |
| Choei Co., Ltd. |
Electrical, plumbing, machinery, equipment, and facility work |
| Chohoku densetsu Co., Ltd. |
Electrical, plumbing, telecommunications, water supply facilities,
and firefighting facilities work |
| Kyusetsukougyou Co., Ltd. |
Facility and plumbing work |
| Ariake densetsu Co., Ltd. |
Electrical, telecommunications, civil engineering, and plumbing work |
| Kyutie Co., Ltd. |
Electrical work |
| Syoueidensetsu Co., Ltd. |
Electrical facility work |
| Sanyudensetsu Co., Ltd. |
Electrical facility, telecommunications, firefighting facilities,
and plumbing work |
| Kyukousogosetsubi Co., Ltd. |
Facility work |
| Ergotech Co., Ltd. |
Facility work |
| Koteradengyo Co., Ltd. |
Electrical facility work |
| Kawachikougyou Co., Ltd. |
Facility, plumbing, and electrical work |
| Seiwakougyou Co., Ltd. |
HVAC work |
| Ryuhou Engineering Corporation |
Electrical and plumbing work |
| Kyulien environment improving Co., Ltd. |
Environmental measurement and analysis, and design
and construction of electrical,
plumbing, and sanitary facility |
| Asia projects engineering Pte. Ltd. |
Construction, installation, and maintenance work for Power,
Oil & Gas plants, EPC work, and district cooling facilities |
| Kyudenko vietnam Co., Ltd. |
Electrical, plumbing, HVAC and sanitary facility work,
and consulting services on construction technology |
| Kyudenko malaysia Sdn. Bhd. |
Design and construction works of electrical,
HVAC and sanitary facility, and environmental energy |
| Kyudenko (Thailand) Co., Ltd. |
Design and construction works of electrical, HVAC facility,
and consulting service on energy saving |
