BTN4D ft PT. JAYA MANGGALA SAKTI: We provide BOP (Blowout Preventer) ,BOP Repair, BOP Rental, Valve Repair, Valve Rental, Fire Truck Repair, Fire Truck Rental ,Pump Repair. Oring, Fiberglass Pipe, Hydrocarbon,Workshop in Balikpapan East Kalimantan-Indonesia