2006.10 foot structure and ergonomically suited walking footwear soles&＃39; model registration.2007.05. Delivery (footwear) to Kumkang Shoe manufacturer.2007.08 Delivery to Lotte department stores2007.08 foot structure and ergonomically suited walking footwear soles&＃39; patent registration.2009.09 Clinical trials by Korean footwear research (shoe, sports shoe, safety shoe)2007.10 Unisoft (American VIDA group agent) MOU agreement2008.05 Awarded by the Human Engineering Organization for "ergonomic innovation" 2008.08 Pohang University Industry Management Engineering with Prof. jeong Minkeun (Chair. Industrial Engineering) published the clinical trials paper in the journal of ergonomics society. 2009.12 Hwaseung footwear sole technology application and sales contract2010.03 Official designation by the Obstetrics and Gynecologist Org as the footwear for pregnant women.2010.09 Papers published in the Journal of Obstetrics and Gynecology2012.03 Clinical trials in Singapore National University.Biomechanical and Physiological Influence of a New Walking shoe Design.2012.12 Clinical trials in University of CalgaryThe Lecaf New Walking Shoes and its Biomechanic Effects2014.03 Balanced slope form insole (Dream fit Insole) Development