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. PELS [Internet]. 2026 Nov. 13 [cited 2026 Nov. 15];10(1):1289-97. Available from: https://pels.umsida.ac.id/index.php/PELS/article/view/2843