The document discusses several business parks in Singapore managed by JTC Corporation. It provides details about International Business Park, the first business park established in Singapore in 1992 in Jurong East. It also describes Changi Business Park, the second business park launched in 1997 in Changi South, located near Changi Airport. Finally, it mentions CleanTech Park, the first eco-business park in Singapore located adjacent to Nanyang Technological University and focused on environmentally friendly industry.