09/2001- 12/2004DJN as market-leading technology with ISO-9001 certified company ,The housing is constructed from heavy gauge, high T304 stainless steel for corrosion resistance and long life. The catalyst substrate is also constructed from stainless steel and formed into a honeycomb like structure. The robust construction of the housing and catalyst substrate protects the unit against vibration, thermal stress and shock impacts which are associated with urban transport equipment.Our direct-fit catalytic converters easily replace OEM mufflers while retaining the same envelope size. Additionally, DJN Technologies’ after-market catalytic converters keep key engine performance attributes like sound attenuation and back pressure characteristics