Is refers to the natural person or legal person, in order to provide, including labor engaged in engineering design, surveying, construction and installation, industrial production, agriculture labor, culture, education, art and sports, health care, transportation, post and telecommunications, legal, consulting, banking, insurance, accounting, inspection, data processing, computer programming and administrative activities to meet his country's natural person or legal person needs a kind of activities of the international community. The main countries are: Germany, Japan, Singapore, etc..