Building decoration engineering professional contracting level one
General contracting of construction engineering / fire protection class II / intelligence class II / mechanical and electrical engineering class III
Safety production license
Business License of Conran Construction Group
Class I qualification certificate for clean engineering
Design, construction and maintenance qualification certificate
Quality Management System (ISO 9001) Certification (Engineering Construction)
Environmental Management System (ISO 14001) Certification
Occupational health and safety management system (OHSAS18001) certification
Quality Management System (ISO 9001) Certification
Double-layer square steel pass sound insulation structure patent
Patent for basement and its moisture-proof ventilation system
The installation structure patent of base skeleton damping and sound insulation
Patent for wall structure of compound building to prevent sound wave of solid noise
