B2B can be notoriously difficult without having connections or simply a proper sales function in your business. You have two options: 1) Go out there and meet people 2) Do marketing and try to generate leads

Depending on where you live, there might be some industry group meeting, exhibitions, online formums,Linkedin groups,etc. Often it cascades pretty quickly after the first few, as business people are willing to recommend companies/people. Just a couple of days ago went to a fantastic training session with this guy,so from now on,if anyone asks,I'd point them his way.