Tender For supply of industrial face mask with nose clip [nose and mouth protector]. conforming to is 9473-2002 respiratoryprotectivedevices filtering half mask to protect against particle class-ffp1s and without valve. the mask should be clearly marked with 1- the name/ trademark/identification mark of the manufacturer.2-class.3-bis certification marking [ warranty period: 30 months after the date of delivery ] ]