Plastic barrels are common containers typically made of plastic materials. They are lightweight, durable, not easily breakable, and relatively low-cost, making them widely used in various fields. For instance, in industry, they can be used for storing and transporting liquids, powders, or granular materials; in daily life, they can hold water, laundry detergent, cooking oil, and more; in agriculture, they can be used to contain fertilizers, pesticides, and other substances.