Aijiren has a strict inspection system. There are quality inspection links in different production links. Some are self-inspection of production machines, and some are manual screening and inspection. Usually, there are inspection links in different links such as production, finalization, printing, and packaging. Workers are inspecting before the printing machine to check whether the printed logo and scale pattern are accurate and whether they can meet the standards. This kind of inspection cannot be done by the machine, and the workers can also check the printing process.