Computer keypads; Dust measuring apparatus; Electric, electronic, or electrochemical oxygen monitors and sensors for environmental use; Gas alarms; Gas detectors for detecting the presence of gas; Gas sensors for measuring gas concentration; Gas testing instruments; Radiation-measuring instruments; Scientific instruments, namely, electronic analyzers for measuring, testing and detecting contaminants and environmental pollutants; Smoke detectors

'alarm':18 'analyz':44 'apparatus':5 'comput':1 'concentr':32 'contamin':50 'detect':22,49 'detector':20,55 'dust':3 'electr':6 'electrochem':9 'electron':7,43 'environment':15,52 'gas':17,19,26,27,31,33 'instrument':35,39,41 'keypad':2 'measur':4,30,38,46 'monitor':11 'name':42 'oxygen':10 'pollut':53 'presenc':24 'radiat':37 'radiation-measur':36 'scientif':40 'sensor':13,28 'smoke':54 'test':34,47 'use':16

HUILITONG

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