The diagram gives information about the production of cement and concrete by displaying the materials and equipment in a flow chart. It is clear that limestone and clay are the raw materials for cement. After passing through the crusher and a cylinder mixer, we will get mixed powders. The next step is to cook the powders by conveying them into a rotating heater. In order to get finer grains, the cooked powders will then be processed in a grinder. In the end, we get cement and package it into bags. As for concrete production, the process is much simpler than cement production: adding all ingredients into a concrete mixer. The key part is the proportion. Gravel takes the largest part with 50%, which is twice amount of sand at 25%. Cement accounts for 15%, and the remaining 10% is water. After processing, we will finally get concrete. Cement is a crucial ingredient in concrete, which is made of limestone and clay.