Color billing rolls with 7 lines are specialized paper rolls used in point-of-sale (POS) systems, particularly in retail and hospitality environments, to generate detailed receipts and transaction records. These rolls feature seven distinct colored lines or sections, which help in itemized billing and easy identification of various transaction elements such as subtotal, tax, discount, and total. The color coding enhances readability for both customers and staff, reducing errors and improving transparency in financial exchanges. Made from high-quality thermal or bond paper, these rolls ensure smooth printing, durability, and compatibility with standard billing machines. Their use streamlines operations while also adding a professional touch to customer receipts.