About our company HANDAN HENGYONG PROTECTIVE&CLEAN PRODUCTS CO., LTD. it is a leading manucfacture and exporter specialized in all kinds of Dust Masks, Filter Media and Work Garment. Our factory was founded in 1989,incorporated in 1994. Currently, our register capital is US$ 10,000,000, The workshop area is 45,000 square meters and there are over 1,200 employees in our factory. We have been certified by ISO 9001:2000 and ISO 14001:2004. Our masks have conformed to NIOSH 42cfr84(Aprroved by NIOSH/CDC in U.S.A.), EN149:2001(Notified by BSI-CE 0086) and AS/NZS 1716:2003(Certified by SAI Global, Australia).