ETP coils are low carbon steel sheets coated with a thin layer of tin. ETP stands for “Electrolytic Tinplate”, which translates as Electrolytic Tinplate. This type of material is commonly used for the manufacture of metal containers, especially for food and beverages, due to its resistance to corrosion and its ability to protect the contents of the container from external factors. Tin provides a safe barrier for food and helps to extend the shelf life of the packaged product.