On a long term partnership with other consultancies, PSJ is able to assure continuity and broadening of services:
- with Vertas in the field of security concepts;
- with the DSP-group in the field of burglary and CPTED;
- with the Kernel-group in the field of CPTED;
- with Qua Tekst in the field of storytelling and communication;
- with Netgemak for software development and website.