array([nan, 'Micronics', 'Sensus', 'Crompton', 'Schneider', ' ', 'HB',
'Selec', 'Ri Meter', 'Kamstrup', 'B Meters', 'Merlin Gerin',
'Danfoss', 'Inepro', 'Jet', 'IME', 'Entity', 'Delta',
'Carlo Gavazzi', 'ACTARIS', 'Schlumberger', 'Autometers', 'Elster',
'Actaris', 'Delta ', 'Landis', 'B Metersss', 'GWF', 'Nuovo Pignone',
'Socomec', 'Siemens', 'Northern Design', 'Common', 'Micronic',
'Meters UK', 'Integra', 'Schneider Electric', 'Micronics (Metrima)',
'JSM ', 'Micronics ', 'Kent', 'ND Metering Solutions', 'DMS',
'IMAC Systems Ltd', 'Contoil', 'SVM', 'GT4', 'GMT', 'Metrix',
'Instromet', 'B Meters', 'Merlin', 'PoWoGaz', 'PR', 'Zenner',
'Itron', 'AquaMotion', 'Ri', 'Boss', 'GasTube', 'Sontex', 'Powagaz',
'BU.G.I (meters) Ltd.', 'WRAS', 'Scheider Electric', 'NWM', 'ABB',
'Socam', 'Nothern Design', 'IME ', 'Square D', 'AHS', 'PowoGaz',
'B-H', 'Socomec ', 'EATON', 'DeltaFlow', 'Autometer', 'EMDI',
'Landis Gyr+'], dtype=object)