In May 2015, Danfoss, a leading manufacturer of high-efficiency electronic and mechanical components and controls for air-conditioning, heating, refrigeration, industrial, and water systems, finalized the acquisition of global AC drives manufacturer Vacon.

Source:: http://www.wateronline.com/doc/danfoss-acquires-vacon-expands-capabilities-variable-drives-0001?atc~c=771+s=773+r=001+l=a