Top- Grade General Contractor for Building Construction            

Grade Ⅰ General Contractor for Municipal Works

Grade ⅠSpecialist for Ground Base and Foundation Works

GradeⅠSpecialist for Construction & Decoration Works

Grade Ⅰ Specialist for Steel Structure Works

Grade Ⅰ Specialist for Firefighting Equipment Erection

Grade Ⅰ Specialist for M/E Engineering Installation

Grade Ⅱ General Contractor for Highway Construction

Grade Ⅱ General Contractor for Railway Construction

Grade Ⅲ General Contractor for Water Conservancy and Hydropower Works

Grade Ⅰ General Contractor for Building Construction

Grade Ⅱ Specialist for Airport Runway Construction

Grade Ⅱ Specialist for Prestress Works

Grade Ⅱ Specialist for Decoration Works

Grade Ⅱ Specialist for Steel Structure Works

Grade Ⅱ Specialist for M/E Engineering Installation

Grade Ⅱ Specialist for Prefabricating Concrete Elements

Grade Ⅰ General Contractor for Municipal Works

Grade Ⅰ General Contractor for M/E Engineering Installation

Grade Ⅰ Professional Contractor for Firefighting Equipment Erection

Grade Ⅰ Professional Contractor for M/E Engineering Installation

Grade Ⅱ Professional Contractor for  Piping Works

Grade Ⅱ Professional Contractor for Integration of Design and Construction of Intelligent Building Works

Grade Ⅲ Professional Contractor for Piping Works of Petrochemical Equipment

GB1 Pressure Pipe ( including PC pipe) Installation

GB2 Pressure Pipe Installation

GC2 Pressure Pipe Installation