Wema Holding is the holding company of Wema System AS and Wema International AS.

Wema is a global market leading supplier of high-quality diesel and AdBlue level sensors to the heavy truck and marine industry. Wema has grown to be Europe’s largest provider of quality tank sensors, thanks to systematic innovation and an uncompromising focus on quality.

AdBlue is the additive, contained within a separate tank, used in the Selective Catalytic Reduction (SRC) system to reduce highly toxic Nitrogen Oxides (NOx) emissions from trucks by up to 90 %. In addition to diesel and AdBlue level sensors, Wema also supplies a range of other products, including level indicators, gauges, smoke detectors and instruments, to the marine, agriculture and construction industries.

Wema was established in 1984, and is headquartered outside Bergen, Norway.