(Telecompaper) Samsung Group has agreed to sell stakes in its units Samsung Techwin and Samsung General Chemicals to Hanwha Group for KRW 1.9 trillion. The proceeds will be reinvested in its core activities. Techwin and General Chemicals are owned by six subsidiaries of Samsung, including Samsung Electronics. Samsung Electronics said its stakes in the Techwin and Chemicals companies are worth KRW 100 billion and KRW 661 billion. Samsung Electronics also announced it will buy back shares valued at KRW 2.19 trillion (USD 2 billion). According to a regulatory filing, Samsung Electronics will buy back 1.65 million common shares and 250,000 preferred shares on the open market by the end of February.