| AMTECH ROOFING, INC. | 
                        M85900 | 
                        INACT | 
                    
                    
                        | AM-TECH SCIENTIFIC WATERWORKS, INC. | 
                        P01000056001 | 
                        INACT | 
                    
                    
                        | AMTECH SECURITY INC. | 
                        P05000123630 | 
                        INACT | 
                    
                    
                        | AM-TECH SECURITY SYSTEMS LLC | 
                        L17000157595 | 
                        INACT | 
                    
                    
                        | A&M TECH SERVICES, LLC | 
                        L22000199372 | 
                        INACT | 
                    
                    
                        | A&M TECH SERVICES, LLC | 
                        L22000199376 | 
                        InActive | 
                    
                    
                        | AMTECH SERVICES, INC | 
                        P99000005784 | 
                        INACT | 
                    
                    
                        | AMTECH SOLUTIONS, INC | 
                        F21000003980 | 
                        Active | 
                    
                    
                        | AM-TECH SOLUTIONS, LLC | 
                        L13000133255 | 
                        INACT | 
                    
                    
                        | AMTECH SOLUTIONS, LLC | 
                        L18000008856 | 
                        InActive | 
                    
                    
                        | A&M TECH SUPPORT LLC | 
                        L25000092157 | 
                        Active | 
                    
                    
                        | AMTECH SUPPORT, INC. | 
                        P99000071487 | 
                        INACT | 
                    
                    
                        | AMTECH SYSTEMS CORPORATION | 
                        F93000005865 | 
                        INACT | 
                    
                    
                        | AMTECH SYSTEMS, LLC | 
                        M12000001532 | 
                        CROSS RF | 
                    
                    
                        | AMTECH SYSTEMS, INC. | 
                        P03000092735 | 
                        Active | 
                    
                    
                        | AM-TECH TELEPHONE SYSTEMS, INC. | 
                        M09156 | 
                        INACT | 
                    
                    
                        | AMTECH TOOL & MACHINE, INC. | 
                        P93000020090 | 
                        INACT | 
                    
                    
                        | AMTECH TRADING, CORP. | 
                        P02000118255 | 
                        INACT | 
                    
                    
                        | AMTECH TRUST CORPORATION | 
                        P96000054821 | 
                        INACT | 
                    
                    
                        | AMTEC HUMAN CAPITAL, INC. | 
                        F09000004819 | 
                        INACT |