| NDT AMELIA, LLC | 
                        L16000083760 | 
                        INACT | 
                    
                    
                        | NDTAPPS, LLC | 
                        L12000075338 | 
                        INACT | 
                    
                    
                        | ND TAX AND ASSOCIATES LLC | 
                        L25000105638 | 
                        Active | 
                    
                    
                        | NDT BRAZIL, INC | 
                        P13000098687 | 
                        NAME HS | 
                    
                    
                        | NDTC, LLC | 
                        L11000121692 | 
                        Active | 
                    
                    
                        | NDT CLEANING & MAINTENANCE SERVICES LLC | 
                        L07000094575 | 
                        INACT | 
                    
                    
                        | NDT CLEANING SERVICES INC | 
                        P16000016574 | 
                        INACT | 
                    
                    
                        | NDTCO ACCOUNT MANAGEMENT LLC | 
                        L24000147359 | 
                        INACT/UA | 
                    
                    
                        | NDTCOMM, LLC | 
                        L12000075400 | 
                        INACT | 
                    
                    
                        | NDT CONCRETE, LLC | 
                        L19000207922 | 
                        Active | 
                    
                    
                        | NDT CONSULTING, LLC | 
                        L21000221820 | 
                        INACT | 
                    
                    
                        | NDT CONSULTING GROUP INC. | 
                        P14000004980 | 
                        Active | 
                    
                    
                        | NDT CONSULTING SERVICES INTERNATIONAL, INC. | 
                        L01178 | 
                        INACT | 
                    
                    
                        | NDT DESIGN, INC. | 
                        P13000098687 | 
                        Active | 
                    
                    
                        | NDT DEVELOPMENT LLC | 
                        L19000028686 | 
                        Active | 
                    
                    
                        | N & D TEAM SERVICES LLC | 
                        L20000022729 | 
                        Active | 
                    
                    
                        | NDTEC, INC. | 
                        P97000093641 | 
                        Active | 
                    
                    
                        | ND TECHNICAL CONSULTING, LLC | 
                        L14000100080 | 
                        INACT | 
                    
                    
                        | N & D TECHNICAL SERVICES, INC. | 
                        F02000002624 | 
                        Active | 
                    
                    
                        | ND TECHNOLOGY, INC. | 
                        F98000001958 | 
                        INACT |