PETG (Polyethylene Terephthalate Glycol-Modified) filament is a popular choice for 3D printing due to its excellent strength, flexibility, and ease of use. It offers good layer adhesion, minimal warping, and low shrinkage, making it suitable for printing large and complex objects. PETG is also known for its transparency and high impact resistance, making it suitable for applications that require clarity, such as lighting fixtures and display cases. Additionally, PETG has good chemical resistance and can withstand exposure to moisture and UV light, making it suitable for outdoor applications and functional parts.