For business person who need to stay in Indonesia for a while more than 30 days to do business activities. In category of Single Business Visa, there is some index number which holder can earn money in Indonesia as well as do business activities. Sponsorship should be the name of Indonesian company. The validity is for 180 days at most. After enter to Indonesia with this visa, you can get 60 days stay permit at first. And you need to arrange visa extension at immigration office in advance before the expired date. After 60 days stay permit, can be extended until 4 times monthly. And this visa will be expired once you leave from Indonesia.