The Material and Machinery Department of China Railway Project Department is mainly responsible for the operation and maintenance management of mechanical equipment of engineering projects. This department plays a very important role in large-scale infrastructure projects such as railways, roads, and bridges. They are responsible for purchasing and debugging various mechanical equipment, ensuring the normal operation of the equipment, and promptly handling equipment failures. They also need to regularly inspect and maintain the equipment to ensure that the equipment is in the best condition to ensure the smooth progress of the engineering project. The Material and Machinery Department of China Railway Project Department is a part of the entire project management. The quality of their work is directly related to the progress and quality of the project, so they bear very important responsibilities.