Resin transfer molding (RTM) is a manufacturing process used to create composite materials. In this method, a dry reinforcement material, such as fiberglass or carbon fiber, is placed in a mold. Then, a liquid resin is injected into the mold, saturating the reinforcement and hardening to form a solid part. RTM is popular in industries like automotive and aerospace due to its ability to produce complex shapes with a smooth finish. The process allows for precise control over the resin-to-fiber ratio, resulting in strong and lightweight components that can withstand high stress and environmental conditions.