The document provides an overview of Singapore's chemicals market, which is one of the largest sectors in the country's manufacturing industry. In 2008, the chemicals industry accounted for over SGD98 billion in output and over one-third of total manufacturing output. The industry includes petroleum refining, petrochemicals, and industrial and specialty chemicals. The Singapore government has promoted the chemicals sector since the 1990s through incentives and infrastructure development, with the aim of maintaining a minimum 21% share of total manufacturing output. Major foreign companies have invested heavily in the country's chemicals industry.