Dry containers, bulk containers, liquid cargo containers, refrigerated containers, and various specialized containers such as auto containers, livestock containers, and hides containers are available. General cargo containers are standard containers primarily used for transporting general merchandise, suitable for goods that do not require temperature control, and are commonly referred to as universal containers. Bulk containers are designed to carry powdered and granular materials and other loose goods. Liquid cargo containers are designed for transporting liquids. Refrigerated containers are equipped with refrigeration units and have low thermal conductivity materials applied to their inner walls, used for carrying frozen, preserved, and preserved goods. Auto containers are specifically designed for transporting cars and can be loaded in two layers. Livestock containers (pen containers) are designed for the transport of live animals, featuring ventilation systems and feeding and manure removal devices. Hide containers are specifically designed for the transport of goods with a leaking juice nature, such as raw hides, with a double bottom to store leaked liquids.