PJF is a trademark of a family business that started in 1982 by the founder Rogério Santos. P stands for Pedro, J for João (both sons) and F for Ferramentas (means Tooling in Portuguese)
Nowadays PJF is a group of three companies:
Newstamp produces Metal and Carbon Fiber Composites components;
Megadies is a Toolmaker, Tools & Dies, Moulds and Fixtures;
Harpia Tech develops and builds UAVs.
Please feel free to contact us at firstname.lastname@example.org.