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I. Material selection and design are of utmost importance. Understanding the corrosion resistance of different materials and choosing anticorrosive materials in a proper and rational manner is the most effective approach. As is well known, there are many types of materials, and different materials corrode at different rates in various environments. Those responsible for material selection should choose materials that have a low corrosion rate, are relatively inexpensive, and possess physical and mechanical properties that meet the design requirements, so as to ensure that the equipment has an economical and reasonable service life. II. Selection of the environment If various factors in the environment that cause corrosion can be eliminated, corrosion will cease or slow down. However, most environmental conditions cannot be controlled; for example, moisture in the atmosphere and soil, as well as oxygen in seawater, cannot be removed, and chemical production processes cannot be altered at will. III. Corrosion inhibitors need to be added to the equipment. Generally, adding a small amount of corrosion inhibitor in a corrosive environment can **slow down metal corrosion**. These inhibitors are usually classified into three categories: inorganic, organic, and gaseous, and their mechanisms of action vary as well. IV. Cathodic Protection Cathodic protection is a method that relies on an external direct current or sacrificial anodes to make the metal to be protected act as a cathode, thereby reducing or eliminating corrosion of the metal. Because before applying cathodic protection, most metal structures subject to corrosion have cathodic and anodic areas; if all of the anodic areas can be converted into cathodic areas, turning the entire metal component into a cathode, corrosion can be eliminated.