supply of industrial safety face shield with crownindustrial safety face shield with crown,industrial safety face shield with crown protection- type 2 confirming to is 8521 (part-1): 197 7 shall consist essentially of a headgear including an adjustable headband and crown band; a durable tiltin g visor support without crown protector; colourless transparent visor and a removable and replaceable swe at band and shall comply with the test requirements specified in the para 4 of is 8521 (part-1): 1977. oem/ nabl test certificate & warranty certificate should be given. sample should be approved before bulk suppl y. make: -udyogi / karam / leslico/venus/ 3m or similar. technical specifications ? annexure a. [ warra nty period: 30 months after the date of delivery ] ]