Suherman, Nurhidayah and Abdullah Syakur Novianto (2026) “Procurement Management Strategy for Zinc Ingots Based on LME Price Volatility: Achieving Cost Reduction Targets and Optimizing Operational Performance in the Hot-Dip Galvanizing Industry”, Al-Kharaj: Journal of Islamic Economic and Business, 8(3). doi: 10.24256/kharaj.v8i3.11465.