Kelly services is one of the leading executive search firms in the world. The global sales rev. is around USD 5billion, ranked as fortune 500 comapany in the US. But in China it is not as famous as that globally. Kelly Services(纳斯达克:KELYA,KELYB)排名美国财富500强,是全球前五大的人力资源解决方案服务公司。她由William R. Kelly 先生创立于1946年,总部设立于美国密歇根州的特洛伊市,目前在全球