, Operating License for Hazardous Chemicals 2008-03-20 , Certificate of ISO14001:2004 Environmental Management System Certification 2008-03-20 , The company was praised to be the Enterprise with the Most Growth Potential in 2006 2007-01-25 , Certificate of Enterprise with Good Credit in Tianjin in 2006 2006-09-14 , Certificate of Top 500 Enterprises in the Service Industry in China in 2006 2006-09-10 , Certificate of Top 100 Enterprises in Tianjin in 2006 2006-09-10 , Certificate of Top 500 Enterprises in the Service Industry in China in 2005 2005-10-07 , Certificate of Top 100 Enterprises in Tianjin in 2005 2005-10-06 , Certificate of ISO9001:2000 International Quality Management System Certification 2005-10-06 , Certificate of Qualification of Import & Export Enterprise 2005-10-06 , Certificate of Qualification for Coal Management 2005-10-06