civilian three-layer thick dust protection disposable mask ce1

why is it lower than others? because it is three-layer thickened meltblown cloth with complete qualification certificates are all qualified products due to market conditions, sometimes there are slight fluctuations. if the price of masks is reduced, the price difference will not be refunded. because of special periods, disposable products, in order to prevent cross infection, there is no quality problem after delivery and the disassembled ones are not returned yunda express, urgent delivery sf t