"China concrete placing boom 24 meters in Sri Lanka" refers to a concrete placing boom manufactured in China and used in Sri Lanka, with a reach of 24 meters. This equipment is used in construction to efficiently and precisely place concrete in high-rise buildings, bridges, and other structures. As China is known for its manufacturing capabilities and Sri Lanka is a growing market for construction, the usage of this boom in the country showcases international collaboration and the adoption of advanced construction technology.