Process engineering is a branch of engineering that focuses on improving and developing industrial processes to make them more efficient, cost-effective, and environmentally friendly. This field involves designing, optimizing, and managing processes in various industries such as chemical, pharmaceutical, food, and manufacturing. Process engineers use principles of chemistry, physics, and mathematics to design and control processes that involve the transformation of raw materials into products. They also work to troubleshoot and improve existing processes, ensuring that they meet quality and safety standards. Overall, process engineering plays a crucial role in the development and improvement of industrial processes across different sectors.