The masks do not comply with the relevant Safety Standard GB2626-2006.
Due to non-compliance with the Safety Standard GB2626-2006; the mask may not provide suitable particulate filtration so is therefore not suitable for use as a filtration device.
What to do...
Stop using of the identified masks and return any residual stock / masks to the place of purchase.
For more information contact 'Inter Build Safety Plus' (formally 'Inter Build Products')
Identified batches of masks sold at NZ Safety Blackwoods, LeedSafe, Safety and Apparel, Trade Direct Wholesale, Drywall Direct Wholesale and TradeMax from April to July 2020
KN95 Protective mask