The construction of a factory or the construction of a factory refers to the construction within an industrial unit, which is usually done in the form of building a shed or a hall, and the last stage, which usually involves the use of the factory, is the start-up of the factory, which means the installation of the machine. The devices and the production line of the factory and starting their work are for the purpose of trial production. And it is one of the other services of this company.