Ketel Uap - Surabaya
- PT Liga Technic
- CV Anugerah Utama Mandiri
- PT Indomarine
- Kencana Sales & Service
- Surya Agung Prima
- PT Dufind Jaya
- Doctor Boiler
- CV Indomas
- Surya Indah Boiler
- CV Berlian Sejahtera
- PT Ometraco Arya Samanta
- PT Basuki Pratama Engineering
- PT Euroasiatic Jaya
- PT Sarana Rapipak
- Samson Djawa Perkasa PT Div Boilers
- CV Ketelindo Pratama
- PT Gilang Kemalapura
- PT Petrolog Multi Usaha Mandiri
- CV Djon A Biro Teknik
- PT Multi Mechsindo Industries
- PT Grand Kartech
- PT Mastrada Surya