Anno 1800 Realistische Produktion Mod v1.0.0

                    
This mod increases the difficulty of the game a little, as some production chains become more complex.
To make the production of some goods more realistic, some parts of the production chains have been replaced and some new goods were added. To keep the construction and maintenance costs for each production chain roughly the same, the costs of some buildings have been reduced.
Changed production chains:

Glasses: Require optical lenses instead of glass, which are in turn made from glass.
Penny-farthings, bicycles, scooters: Requires rubber tires made from caoutchouc, replacing caoutchouc as an input. The tire manufacturer (OW and NW) can be improved with items for chemical production buildings.
Motors: Require electromagnets instead of steel, which are made from iron, coal and copper (OW and NW).
Concrete: Instead of cement, limestone is extracted in mines, which is processed into cement with quartz sand. This is further processed with clay to make concrete, which is used to make reinforced concrete with steel instead of cement in the concrete plant.