DJN as market-leading technology with ISO-9001 certified company ,The housing is constructed from heavy gauge, high T304/409 stainless steel for corrosion resistance and long life. The catalyst substrate is also constructed from stainless steel and formed into a honeycomb like structure.Efficient: The inner honeycomb ceramic substrate has a porous structure, which increases the reaction area and ensures the catalyst (Pt, Rh, Pd) on the coating surface to increase the conversion rate.