Also in March 2007, eight air separation units and related bulk gas business, with about 300 employees, were sold to Airgas for $495 million in cash. In April 2007, the company sold the industrial gas business of BOC Gazy to Air Products & Chemicals for €370 million or about $503 million. In 2008, the head office of Linde AG was relocated from its historic headquarters in Wiesbaden to the Angerhof building in downtown Munich. In 2010, the company acquired over 95% of the shares of Sri Lanka-based Ceylon Oxygen Ltd. In June 2011, PT Linde Indonesia, a subsidiary of Linde, announced its plan to build an air separation plant worth Rp.1 trillion ($117.33 million) in Cilegon, Banten to supply industrial gas to PT Krakatau Steel's steel plant. In May 2012, the company acquired the Belgium, France, Germany, Portugal and Spain homecare business of Air Products & Chemicals for €590 million. In August 2012, the company acquired Lincare Holdings, a healthcare gas provider in the USA for US$4.6 billion to become the largest home care gas supplier in North America. In December 2012, the company acquired homecare company Calea France SAS. In February 2016, Lincare Holdings acquired American HomePatient, Inc. In December 2016, Linde Korea completed the acquisition of Air Liquide Korea's industrial merchant & electronics and liquid bulk air gases divisions, based in South Korea. In early June 2017, after almost a year of on-and-off negotiations, Linde and Praxair, the successor to UCC's Linde Air Products division, agreed to merge. In July 2018, the company agreed to sell certain business in North and South American assets to Messer Group and CVC Capital Partners for $3.3 billion to gain regulator approval for the Praxair merger. On 31 October 2018, the merger was completed except finalising divestitures required by the respective antitrust authorities. On 1 March 2019 the company completed divestitures required by US antitrust authorities. On 28 February 2019, Matheson acquired Linde HyCO, divested to comply with the regulatory terms of the Praxair merger. On 9 August 2019 Linde partnered with CarbonCure Technologies. On 29 August 2019, the company acquired a 10% stake in Hydrospider, a Swiss producer and supplier of hydrogen derived from renewable energy sources. In October 2019, the company invested £28 million in ITM Power, a British manufacturer of polymer electrolyte membrane electrolyzers for hydrogen production via electro-chemical splitting of water into hydrogen and oxygen. In January 2020,