This document discusses coatings for metal food packaging cans. Lacquer coatings are applied internally and externally to cans to protect the metal and food contents. Common internal coating types include epoxy phenolic, acrylic, phenolic, and vinyl resins, which protect foods from acids and metals. External coatings provide environmental protection and allow for labeling. Proper coating selection depends on food acidity and composition to prevent corrosion and discoloration. Coatings are applied using various methods to safely contain and preserve foods.