Complex sentence: In November 2006 Daikin purchased the OYL Group, which includes McQuay International making Daikin the second largest HVAC Manufacturer in the world after Carrier Corporation.
Split into simpler sentences: In November 2006 Daikin purchased the OYL Group, which includes McQuay International. It made Daikin to the second largest HVAC Manufacturer in the world after Carrier Corporation.