This is a fictional livery for the PMDG 737-700BDSF, a German carrier named Global Freight Systems.
Installation:
1.) Extract the included .ptp file
2.) Open the PMDG Operations Center
3.) Make sure Microsoft Flight Simulator is selected for Simulator, PMDG 737 for Product, and PMDG 737-700BDSF for Variants/models
4.) Click Install from PTP file in the bottom left corner, and select the .ptp file extracted in step 1