AB Trafikkontroll had started their business on the south side of Halmstad, but was moved in 1926 to a factory on Tollsgatan.

1962 SAB started a project to see how they could produce brake adjusters for road vehicles instead of only trains.

The result became the brake adjuster which still is the single product with the highest turnover at Haldex.

Investments in the US: The company made two acquisitions in the United States since the late 1990s, Midland-Grau in 1998 and Neway/Anchorlok in 2002.

Hesselman later became the leading producer of hydraulic aggregates located at the lifts at the end of trucks.

Haldex co-owned (from 2004) the company Alfdex with Alfa Laval, for production of separators for truck engines.

Haldex after 2011: In 2011, the Traction division was divested to BorgWarner, including the all-wheel drive.

The hydraulic division formed a new company called Concentric and was listed on the Stockholm stock exchange.

Three companies presented their offers, including Knorr-Bremse which was the highest at 125 SEK per share, and ZF and SAF-Holland.

Knorr-Bremse's bid had a condition stating that they need clearance from all relevant competitive regulators.