The origin is national accounts table E109. The national accounts framework is UN SNA 2008. Figures are millions of Hong Kong dollars at current prices (Mil. HKD) or at chained year-2015 prices (Mil. Ch. 2015 HKD), not seasonally adjusted (NSA). The series start at 1973Q1.

The series reside in the historical catalog (Hong Kong (SAR) » National Accounts » by Expenditure » Quarterly » Chained prices | Current prices) and include, for example:

• NALEGFCFCNUQ.IHKG    = National accounts: Expenditure approach - Gross domestic fixed capital formation - Building and construction, (Mil. HKD, NSA)
• NALEGFCFMEIPUUQ.IHKG = Gross fixed capital formation - Machinery; equipment and intellectual property products - Public sector, (Mil. HKD, NSA)
• NACEGFCFCOTUQ.IHKG   = Gross fixed capital formation - Cost of ownership transfer, (Mil. Ch. 2015 HKD, NSA)

Because catalog locations are subject to change, the upper-right search box on DataBuffet.com provides a "find in catalog" mode that accepts a mnemonic.