A massive corrugated metal building with giant delivery bays in the back
Smoke stacks pumping out white smoke
A large emblem or logo of the company on the exterior
A sales and administrations office or wing (desks, phones, computers, office staff)
An office engineering department where equipment is researched and designed for production (mechanical and electrical engineers using computers with 3-D technology design simulation capabilities, drafting stations, etc.)
A manufacturing center with technicians and specialists operating tools and machinery, or inspecting at stations in a temperature-controlled environment
An open and well-lit warehouse (cement floors with painted lines to delineate walking paths)
Storage and supplies (industrial shelving, pallets, raw materials, hoses, valves, molds, chains, and tools)
Robotic machining cells
An automated painting booth 
Safety signs
Buttons that activate flashing lights attached to poles in case of an injury or emergency shut down situation
Several eye wash stations and first aid centers with accessible kits
Janitorial staff sweeping debris off floors or changing out trash bins
Multiple stations with air hoses and industrial drills
Wet or dry saws
A metal walkway over the assembly room floor for observation
An assembly and production center (an assembly line, hardhat-wearing technicians making all connections and double-checking with diagnostic equipment)
Inspectors and safety overseers walking observation walkways and visiting stations