“…Handling the demands, i.e., highly collaborative complex systems and multiple machines of Industry 4.0, focusing on manufacturing is challenging (Thoben et al, 2017). From the requirements of Industry 4.0 in the literature studies (Lee et al, 2015a;Thoben et al, 2017;Sang et al, 2020aSang et al, , 2020bSang et al, 2020;Zonta et al, 2020;Sang et al, 2021), several key factors need to be considered for an optimal maintenance schedule plan of PMS4MMC. This includes data-driven maintenance, i.e., predictive models such as RUL, multiple machine components, maintenance tasks, maintenance time, cost, and the resource aspect, i.e., availability status of each component and engineer.…”