Efficiency Analysis of Underframe Component Installation Process in the KCI Retrofit Electric Multiple Unit (EMU) Project at PT xxx using a Lean Manufacturing Approach: Analisis Efisiensi Proses Pemasangan Komponen Underframe pada Proyek KRL KCI Retrofit di PT xxx dengan pendekatan Lean Manufacturing. (2026). Procedia of Engineering and Life Science, 10(1), 1289-1297. https://doi.org/10.21070/44edbd30