21 Century Environment Co., Ltd.

2005 03-Jul Reviewed Business Plan and Feasibility 2005 18-Jul Registered corporate 21 Century Environment Co., Ltd. 2005 29-Jul Tax registration and contracted Dongmyung Industrial Complex 2005 04-Aug Contracted real estate for factory in Dongmyun Industrial Complex 2005 01-Oct Commissioned factory 2006 20-Feb Registered manufacturing of sewage disposal facility and single sewage disposal tank 2006 02-Mar Manufactured/Sold sewage disposal facility(FRP), PE sewage disposal tank and PE single sewage disposal tank 2006 20-Mar Additional registered of manufacturing item (sewage disposal tank, FRP, cylinder type)/septic tank method for 15, 20, 25, 30 people 2006 11-Mar Registered design and construction of private sewage disposal facility 2006 25-May Revised registration of product item (HBC engineering method, FRP, cylinder type)/50m2/day(cylinder type) 2007 29-Mar Changed Representative Director 2007 13-Jul Additional registered of manufacturing item (aerobic biologic method, PE one-body type) 1m3/day(for riparian area) 2007 05-Oct Additional registered of manufacturing item (septic tank method, PE one-body type) sewage disposal tank for 5 people 2007 30-Oct Additional registered for manufacturing item (septic tank method, PE one-body type) sewage disposal tank for 10 people 2008 21-Jan Patent of organic waste treatment device 2010 27-Jan Registered utility design (portable toilet) 2010 03-Oct Patent of sewage disposal device and method 2010 24-Dec In-house production certificate (sewage disposal device, portable toilet) 2012 04-Feb Patent of recycle natural circulation sewage disposal device 2013 01-Apr Registered small business 2013 14-Apr Registered Woman business 2013 10-Mar Patent for reduction device of non-point pollution installed at the flow route of fluid, Patent of solid support for sewage disposal