Machines and machine tools for the treatment of materials, namely, 3D printers for treatment of thermoplastics; Working machines, namely, automatic and semi-automatic machines for metal and plastic working; Machines for the production of molds from plastics or sand; Laser machines for cutting; 3D printers; Structural parts of 3D printers; 3D printers in the nature of electromechanical devices for the production of models or prototypes; 3D printers in the nature of devices for transfer of 3D drawings to physical objects; 3D printing pens