Ventilation hoods; air cooling apparatus; filters for air conditioning; electric air driers; air-conditioning installations; air filtering installations; desiccating units for air drying; gas scrubbing apparatus; air purifying apparatus and machines; air-conditioning, air cooling and ventilation apparatus and instruments

'air':3,8,11,14,17,23,28,34,36 'air-condit':13,33 'apparatus':5,27,30,40 'condit':9,15,35 'cool':4,37 'desicc':20 'dri':24 'drier':12 'electr':10 'filter':6,18 'gas':25 'hood':2 'instal':16,19 'instrument':42 'machin':32 'purifi':29 'scrub':26 'unit':21 'ventil':1,39

HUIRUI

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