Baumot Group AG. Baumot Group AG, formerly TWINTEC AG, is a Germany-based provider of exhaust gas after-treatment and engine solutions for the automotive industry in Europe. The Company provides diesel particulate filters, secondary air systems, and catalytic converters for retrofitting and upgrading vehicles with combustion engines. It also offers replacement parts, such as replacement catalytic converters and replacement exhaust manifolds for the petrol and diesel vehicles; and particulate filters comprising partial flow systems for light duty, medium duty, and heavy duty commercial vehicles. In addition, the Company provides catalytic coatings, including three-way catalysts, diesel oxidation catalytic converters, diesel particulate filters, as well as hydrolysis, reduction, and slip catalysts for the automotive, non-road mobility, and stationery engine markets.