Our company is registered in Delaware, not Pennsylvania, it was registered on May 29th, 2013. Its head office is located at 355 Lancaster Ave, Haverford, PA 19041 - These are two separate entities and don't have anything to do with each other from a legal perspective.
Why are you not registered in PA? It is illegal to conduct business in a state without registering with the local/state government. Is this so that you can avoid paying state taxes?
That's not true. A corporation can be registered just about anywhere within the States and be valid. All they would need in PA is occupancy permits in the name of the corporate entity.