These factors are determined by advertising, the public's awareness and loyalty to your brand and the source of the product. All of these can be manipulated and influenced by your actions. Department stores may also have inventory units to maintain buffer stocks, private labelling units to put your own brand name on products you have bought in and advertising units to increase public awareness of your products, by linking to TV stations and newspapers. To maximise product quality, it will become necessary to manufacture your own products in factories and farms. These firms work in a similar way to department stores but have some different units and sell their products to department stores or other factories for further processing.
Farms grow crops and livestock.
The livestock produce various frozen meats to be sold to department stores and milk and leather which go on to factories to make chocolate and clothing. The quality of everything that is produced is determined by the level of expertise in the units involved, this is increased by Presidential expertise and spending on training and equipment. The other influence is the quality of the raw materials is determined either by the source, in the case of minerals or by soil quality and favourable weather conditions for crops. This is one of my department stores, with purchasing and sales around the outside, linked to an advertising unit in the middle. Finding the best ways to lay out your firms is important in maximising their usage and profitability.