**Contents**


#### **Hao Zhang, Xinyue Wang, Letao Chen, Yujia Luo and Sujie Peng**


#### **Liang Yang, Qinming Liu, Tangbin Xia, Chunming Ye and Jiaxiang Li**

Preventive Maintenance Strategy Optimization in Manufacturing System Considering Energy Efficiency and Quality Cost Reprintedfrom:*Energies***2022**,*15*,8237,doi:10.3390/en15218237**207**

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