Coating techniques are methods used to apply a layer of material onto a surface to enhance its properties, such as durability, appearance, or resistance to corrosion. Common techniques include spray coating, dip coating, and electroplating. Each method has its own advantages and is chosen based on the specific requirements of the project. These techniques are widely used in various industries, including automotive, aerospace, and electronics. For example, powder coating is popular for metal surfaces due to its strong finish and environmental benefits. Understanding these techniques helps in selecting the right coating for different applications.