- MEP Installation Engineering General Contracting Class I Building MEP Installation Engineering Specific Contracting Class I Building Decoration Engineering Contracting Class I Electronics & Intelligent Engineering Specific Contracting Class I Fire - fighting Facilities Engineering Specific Contracting Class I Building Engineering Construction General Contracting Class I Level With GCII Pressure Pipeline License
ISO quality management system certificate
Enterprise qualification certificate
Enterprise qualification certificate
Enterprise qualification certificate
Pressure pipeline qualification
ISO environmental management system certificate
ISO certificate in occupational health management system
ISO quality management system certificate