Anyone have experience in building services?

I'm looking for intros to experts/SMEs/entrepreneurs in the broad space of building services. I'd appreciate any warm intros in the following categories: A/V System Maintenance and Events Support Biohazard Cleanup Commercial Kitchen Maintenance Elevator Maintenance Energy Auditing/Commissioning EV Charger Maintenance Fire and Life Safety Services Gas/Utilities System Maintenance Greenhouse Maintenance Hazardous Waste Disposal Indoor Air Quality / Radon Testing Managed Wifi Providers Refrigeration System Maintenance Solar Panel Cleaning Spill Prevention and Response Stormwater Compliance Feel free to message me at redacted if you don't mind chatting briefly on any of the above topics or know someone I should connect with.