Samsung Group [SAGR.UL] said on Wednesday it is selling stakes in defense firm Samsung Techwin Co Ltd and three other units for 1.9 trillion won to Hanwha Group units. Samsung Group said in a statement Samsung Electronics Co Ltd, Samsung C&T Corp and other Samsung affiliates decided to sell a 32.4 percent stake in Samsung Techwin to Hanwha Corp for 840 billion won, and a 57.6 percent stake in Samsung General Chemicals Co Ltd to Hanwha Chemical Corp and Hanwha Energy Corp [YCOGN.UL] for 1.06 trillion won.