Factory for sale in various cities Lahore, Karachi, Islamabad, Rawalpindi, and Gwader of Pakistan.Ideal for Locating the best deal. Building or group of buildings where goods are manufactured or assembled chiefly by machine. Group of buildings with facilities for the manufacture of goods. Any place producing a uniform product, without concern for individuality: They call it a law school, but it's just a degree factory. Formerly an establishment for factors and merchants carrying on business in a foreign country.A  manufacturing plant or a production plant is an industrial site, usually consisting of buildings and machinery, or more commonly a complex having several buildings, where workers manufacture goods or operate machines processing one product into another.