Emitec, a technology leader, is a 50:50 joint venture with Siemens AG.

Emitec designs and manufactures metal substrates, which support the catalyst in catalytic converters used in automotive exhaust systems. The thermal properties of a metallic substrate enable it to reach operating temperatures more quickly than traditional ceramic material. This results in significant reductions in emissions, particularly when engines are started from cold. Catalytic converters employing metal substrate technology can achieve very high cell densities which provide a more efficient way of complying with increasingly stringent emission legislation.