Reefer containers, short for refrigerated containers, are specialized shipping containers designed to transport perishable goods at controlled temperatures. They are equipped with built-in refrigeration units that maintain a consistent climate, making them ideal for transporting items like fruits, vegetables, dairy products, and pharmaceuticals. These containers can be used in various modes of transport, including ships, trucks, and trains, ensuring that temperature-sensitive cargo remains fresh during transit. Reefer containers are essential in global trade, helping to reduce food spoilage and maintain the quality of products like seafood and meat.