OBS_VALUE: The requirement to register with the Accounting and Corporate Regulatory Authority (ACRA) before commencing business in Singapore applies to both local and foreign companies. A foreign company shall have a registered office in Singapore to which all communications and notices may be addressed and which shall be open and accessible to the public for not less than 5 hours between the hours of 9 a.m. and 5 p.m. each business day. A foreign company shall register as a foreign company under the Companies Act before it establishes a place of business or commences to carry on business in Singapore, and notify ACRA the situation of its registered office and the days and hours during which it is open and accessible to the public, unless it is open and accessible to the public during ordinary business hours on each business day. 