There were a few biscuit manufacturers in Singapore between 1900 and 1957. The famous ones are:
- Thye Hong Biscuit Factory. It was started by Lee Gee Chong in 1935. http://heritagetrails.sg/content/750/Thye_Hong_Centre.html
- Ho Ho Biscuit Factory Limited. http://blogtoexpress.blogspot.com/2012/08/ways-done-in-past-factory-workers.html
- Khong Guan Biscuit Company. It was started by two brothers Chew Choo Keng (elder brother) and Chew Choo Han (younger brother). Re-opened in the post-war in 1947 by the 2 brothers. http://sg.entertainment.yahoo.com/news/five-oldest-fnb-brands-singapore-083248686.html and http://infopedia.nl.sg/articles/SIP_1670_2010-06-16.html
In a book written by Dr Abdul Wahab bin Mohd Ariff (Medical Students During the Japanese Invasion of
Singapore, 1941-1942), he wrote that he had gone out to buy Hong Hong Factory biscuits one evening in 1941-42 with S. M. A. Alhady before the Battle of Singapore.
There is no update on Hong Hong Factory biscuits or Hong Kong Factory biscuits. The correct spelling is unknown.