This building is a still functioning factory. The owner will give you Mystery Meat quest after completing which you will become his enemy. Inside you will also meet a merchant who later will leave the area and you won't find her anyway near.
In the building you will find large number of canned food of low quality (it heals 40 health points and adds 12 radiation points) and monster meats,
In the main factory you can also collect a set of aluminum cans for packing,
In the basement there are hordes of various ghouls and you can find a fusion core there,
In the office above the main part of the factory you will find Barter bobblehead and Tales of Junktown Jerky Vendor magazine