“The cooling system is state of the art, but Cao reports that the mine uses common equipment — including racks and valves — found ‘in local markets easily.’ This enabled ASICMINER to build its facility quickly and comparatively cheaply before setting it to its mining task. The tanks, when filled with 92 circuit boards, cooling liquid, and an array of racks and rails, each weigh about 200 kilograms. They’re pushed into place by a forklift truck. Hong Kong’s low energy prices make it an attractive center for Bitcoin miners, and the use of easily available components apparently helped drive down ASICMINER’s costs, but the investment necessary to build and maintain such a facility is still high.”
http://www.theverge.com/2013/12/2/5165428/bitcoin-mine-in-hong-kong-uses-jelly-to-keep-cool