The diagram given is a process of how plastic products are made of raw materials.
The systematic process of making a plastic product from raw materials consists of four main stages from bringing the material from oil refinery until it is moulded as a product and stored in a warehouse.
First of all, raw material is brought to the factory from the oil refinery and pressured in the oven in the high temperature until long molecules of plastic take shapes of plastic granules. Then, granules are sent to the injection moulder where the plastic is forced into the mould, after which it is released as a shaped plastic product. Next step is the quality control, which is taken by specialists who check the products carefully by separating valid products bad ones as waste products and pack into the boxes. After being packaged, ready plastic products are sent and stored in the warehouse until they are taken for the slaes.
