PET, PETG, and Polycarbonate are widely used in optical industry, due largely to their good transparency and mechanical property. They can be made as film, sheet, and 3D parts for applications. Many of Gigbond adhesives can be used on PET and PETG substrates. GB101, for example, adheres PET, PETG, as well as stainless steel, glass, copper, PC, PVC, TPU, ABS, and PMMA. GB302, GB304, GB501, GB508, and GB509 are also excellent candidates.