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- 1986Established Company & Authorization of Disinfection business authorization
- 1989Changed company logo & Patent registration(Patent No. 0062873)
- 19921992 Authorization of tree disinfection No. 92-3
- 1998Started Landscape Management Business
- 1999Licensed for security business
- 1986-1999
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- 2004ISO9001/2000 Certification
- 2007HC ISO 9001/ JAS-ANZ landscaping, quarantine, security, parking management, building cleaning and facility management Certification
- 2007Landscape Management / constructions
- 2007Construction Business Registration Certificate(Yongsan 07-18-01)
- 2000-2009
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- 2010-2018
- 2014Established Tree Hospital(Tree clinic Seoul 2014-022)
- 2015MAIN BIZ Certification(Management innovation certification)
- 2017Management of 460 work sites nationwide
- 2018Established PC&LA Laboratory
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- 2019
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Applied Group Ware(ERP) System,
Opened Internet broadcasting station,
Implement cost savings through a Study on the Unified and Integrated Management of Advanced Work Service-oriented Work and by constructing efficient system, Developed as Korea's top landscaping, quarantine, and building management company through continuous technological innovation aimed at customer satisfaction
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