The "Copper Layer" refers to a thin layer of copper metal used in various applications, particularly in electronics and manufacturing. It serves as a conductive pathway for electrical signals, making it essential in printed circuit boards (PCBs) and other electronic components. The layer is typically applied through processes like electroplating or sputtering. In addition to electronics, the Copper Layer is also utilized in roofing and plumbing due to its durability and resistance to corrosion. Its antimicrobial properties make it beneficial in medical applications, where it can help reduce the spread of bacteria. Overall, the Copper Layer plays a vital role in modern technology and infrastructure.