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3 Apr 2020 . China Releases an Updated Mandatory Standard GB 2626-2019 Respiratory Protection . SG 04120 Man in Mask . field, head harness, connection and connecting parts, lens, air tightness, flammability, cleaning and . Compared with GB 2626-2006, GB 2626-2019 contains many technical differences.
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29 Mar 2020 . Manual Measurement, Please Allow 1-2cm Error - Buy Comfortable And . Comfortable And Breathable N95 Protective Mask Gb 2626-2006 Safe . Mouth Mask 3-Layer Anti-fog Haze Dust Face Mask Reusable Mouth Cover.
. cement coal can clean the dirt is decorated 3200 dust mask Brand: Naisian; . Execution standard: Chinese standard GB 2626-2006; Protection grade: .