- Pertamina UP-VI Balongan, pt.(Persero)
- Pertamina EP Region Jawa Cirebon, pt. (Persero)
- Pertamina UPMS Balongan, pt.(Persero)
- Elnusa Petro Teknik, pt. Unit Balongan
- Pertafenikki Engineering, pt.
- Rabana Gasindo Usama, pt.
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- Rekayasa Industri, pt. (Persero)
- Radiant Utama Interinsco, pt.
- Apeka Industrial Servindo, pt.
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