Catalytic Converter factory Introduction DOC catalytic converters are tested against the OEM to ensure that backpressure, temperature, and the regeneration performance meets, or exceeds, the standards set out by the original manufacturer. Many of our DPFs also feature value-added your samples or technical drawings. We can manufacture moulds and fixtures.Catalytic Converter factory website:http://www.xichuang-catalyst.c....om/catalytic-convert