What if you expect Chinese drywall?

Black copper where? Watch out for irrigation systems. I’ve had 3 inspections one with private well for irrigation, and 2 with reclaimed water where the main panels were outside or next to a garage door and the wiring inside was completely corroded black from the sulfur content in the irrigation water being presumably released into the air. Nothing inside the house wiring, air handler coils, etc showed any other signs. Good luck