Hong Kong Special Administrative Region (HKSAR) List of Approved Suppliers of Materials and Specialist Contractors for Public Works Specialized Operations for Highway Structures (Class V)  | 
                        Hong Kong Quality Assurance Agency (HKQAA) Quality Management Process Model Certification ISO9001:2015  | 
                        Accredited by United Kingdom Accreditation Service  | 
                        Accredited by Hong Kong Accreditation Service  | 
                        Accredited by China National Accreditation Service  | 
                        Member of Galvanizers Association  | 
                        Member of American Galvanizers Association  | 
                        Member of Galvanizers Association of Australia  |