The 3D printers "Photonic Professional GT" made by the German company Nanoscribe are the world's highest resolution systems for three-dimensional nano- and microfabrication. Based on the technique of two-photon polymerization they provide maskless lithography and additive manufacturing in one device to their scientific and industrial customers. The systems set new standards in diverse applications, e.g. MEMS, micro-optics, and micro rapid prototyping.