短期停留人员，一般是指临时来华工作和受雇提供劳务的人员。如临时来华洽谈贸易、商谈投资项目、履行商务合同以及进行调研、交流、展销等项活动或对已有的投资项目进行督促检查，或对雇主所销售的机械设备进行安装、调试和提供售后服务。由于各类人员的交往流动情况不同，所? Short-term stay of personnel, generally refers to the temporary work in China and employment to provide staff. Such as temporarily negotiating trade with China, negotiating investment projects, fulfilling business contracts, carrying out research, exchange and exhibition activities, supervising and inspecting existing investment projects or installing, debugging and providing after-sale machinery and equipment to employers service. Due to the different types of personnel exchanges and flows, what?