AIR OR VACUUM PUMPS AIR OR OTHER GAS COMPRESSORS FANS (VENTILATORS AND EXTRACTORS); AIR AIR HOODS WITH AN EXTRACTOR (WITHOUT FILTERED OR NOT); GAS TIGHT BIOLOGICAL SAFETY CABINETS (WITHOUT FILTERED OR NOT)
AIR OR VACUUM PUMPS AIR OR OTHER GAS COMPRESSORS FANS (VENTILATORS AND EXTRACTORS); AIR AIR HOODS WITH AN EXTRACTOR (WITHOUT FILTERED OR NOT); GAS TIGHT BIOLOGICAL SAFETY CABINETS (WITHOUT FILTERED OR NOT)
AIR OR VACUUM PUMPS AIR OR OTHER GAS COMPRESSORS FANS (VENTILATORS AND EXTRACTORS); AIR AIR HOODS WITH AN EXTRACTOR (WITHOUT FILTERED OR NOT); GAS TIGHT BIOLOGICAL SAFETY CABINETS (WITHOUT FILTERED OR NOT)
AIR OR VACUUM PUMPS AIR OR OTHER GAS COMPRESSORS FANS (VENTILATORS AND EXTRACTORS); AIR AIR HOODS WITH AN EXTRACTOR (WITHOUT FILTERED OR NOT); GAS TIGHT BIOLOGICAL SAFETY CABINETS (WITHOUT FILTERED OR NOT)