Septrianto, F. and Donoriyanto, D. 2025. Defect Repair Efforts in Bone Plate Product Quality Control Using Six Sigma (Case Study: PT ABC). Indonesian Interdisciplinary Journal of Sharia Economics (IIJSE). 8, 1 (Jan. 2025), 1789-1798. DOI:https://doi.org/10.31538/iijse.v8i1.5774.