public static void Test() { ChinaFactory factory = new HaierFactory(); AirConditioner ac1 = factory.CreateAircondition(); Fridge f1 = factory.CreateFridge(); Console.WriteLine(ac1.Name); Console.WriteLine(f1.Name); ChinaFactory greeFactory = new GreeFactory(); AirConditioner ac2 = greeFactory.CreateAircondition(); Fridge f2 = greeFactory.CreateFridge(); Console.WriteLine(ac2.Name); Console.WriteLine(f2.Name); }