Companies that perform screen printing on wafer-based solar photovoltaic (PV) cells print the buses and mesh of silver on the front, and buses of silver on the back. To achieve surface reflection and passivation, aluminium paste is applied onto the back. Professional printers use screen printing press to produce multiple copies of the screen design. The presses come in a wide variety, including simple and sophisticated variants. Companies involved in high production operations typically use industrial-grade automatic printers that require minimal human intervention. These types of screen printers are capable of increasing production considerably. In recent years, solar wafers have been getting larger and thinner, which necessitates meticulous printing to maintain a lower breakage rate. However, maintaining a high printing throughput allows printers to improve throughput of the entire production line. Screen printing in Perth produces a wide variety of high-quality products from which to choose.