“Implementation of PDCA and Seven Tools to Handle Obstacles in the KCl Screw Material Machine at PT Petrokimia Gresik”. G-Tech: Jurnal Teknologi Terapan 9, no. 1 (January 4, 2025): 169–177. Accessed October 2, 2026. https://ejournal.uniramalang.ac.id/g-tech/article/view/5762.