CNC ALUMINIUM PERFORATION FOR FACADE Aluminium Sheet Perforation For Facade As a leader in the design, manufacturing and fabrication of aluminium perforated metal products, Gemtech offers the widest selection of aluminium perforated metal in the industry. We perforate Aluminium Sheets in a variety of patterns and shapes or standard. We have variety of sizes of toolings and sheet sizes available, allowing us to readily produce most perforated metal patterns. We offer you the highest level of commitment and quality assurance.