AIP Conference Proceedings [AIP Publishing RECENT PROGRESS ON: MECHANICAL, INFRASTRUCTURE AND INDUSTRIAL ENGINEERING: Proceedings of International Symposium on Advances in Mechanical Engineering (ISAME): Quality in Research 2019 - Padang, Indonesia (22–24 July 2019)] RECENT PROGRESS ON: MECHANICAL, INFRASTRUCTURE AND INDUSTRIAL ENGINEERING: Proceedings of International Symposium on Advances in Mechanical Engineering (ISAME): Quality in Research 2019 - Implementation of lean-DMAIC method for reducing packing defect in a flour company