Registration of Business in Singapore is governed by the Business Registration Act (Chapter 32).
To find out more about the Act, visit the below website:
http://agcvldb4.agc.gov.sg/non_version/cgi-bin/cgi_retrieve.pl?actno=REVED-32&doctitle=BUSINESS%20REGISTRATION%20ACT%0A&date=latest&method=part&sl=1