Eurovent Certificate Hygiene Assessment ISO14001 ISO9001 United Nations Nations Unies CRAA Certification for Ref and AC products 2005-2009 Manufacture license of special equipment 2008 - China CCC China Compulsory Certification Higter Technology Corporation Certificate AA Plus good quality certification 2004-2005 Forign Investment Certificate China manufacture production license - AC Unit 2005-2010 - P1 China manufacture production license - AC Unit 2005-2010 - P2