Dongguan Daxian Instrument Equipment Co.,Ltd. CHINA'S LEADER IN TESTING EQUIPMENT Professional Manufacturer of Building Materials 13 years Fire Retardant / Wire/ Plastics/ Rubber/ Environmental
Evaluating the Bacterial Filtration Efficiency (BFE) of Medical Face Mask Materials, Using a Biological Aerosol of Staphylococcus aureus EN14683-2019...