I-Leader Auto Parts (Changzhou) Co.,Ltd is located in Changzhou National High-Tech Industrial Development Zone, the core city of the Yangtze River Delta in China. I-Leader is a manufacturer which specializes in design & research, producing and selling catalytic converter, catalysts (DOC, DPF & SCR) and related auto parts. Our team have over 20 years of experience in the field of three-way catalytic converters.Our core products-- Catalytic converters are mainly used in automobile, motorcycle, universal gasoline engine, diesel engine, diesel generator set, industrial and mining enterprises engineering vehicles... all of these exhaust purification treatment. We have our own laboratory, catalyst's wash-coat production line, laser cutting center, and robotic welding workshop..., All of products meet the exhaust emission standards of China National 4~6 level and Euro 2\3\4\5and 6. I-Leader is not only committed to provide supporting services to tier 1 manufactures,but also actively develop the after-sales market. As a top supplier, we assisted many of automotive OEMs in passing the certification of EPA(USA), E-Mark(Euro) and so on. Our products are sold well in dozens of countries of Europe and America.