Grade is the classification of posts. Each series of posts can be compared horizontally according to the level. For example, department manager, financial manager, sales manager and human resource manager all belong to the same level. Rank is the distinction of the same series of positions, such as sales representative position, which is divided into three ranks: ordinary sales representative, intermediate sales representative and senior sales representative.

Grade and rank setting: the promotion sequence of technician rank is divided into seven grades: technician, assistant engineer, engineer, chief engineer, senior engineer and chief engineer. In the same rank, different ranks are set according to different responsibilities, achievements and qualifications. There are junior, intermediate, senior, technician, senior technician, assistant engineer, engineer, chief engineer, senior engineer and chief engineer.