Oy Woikoski Ab is Finland's oldest industrial and medical gas supplier.[1] The company started 1882 as a carbon black factory which then evolved into the company's current form.[1] The company is also an importer of welding and gas equipment which they distribute along with their gas products through a network of resellers. Kt currently operates 13 plants and offices, and has over 200 agents in Finland.[1] Their annual turnover is approx. 25 million EUR.
Woikoski is also an exporter of liquid and gaseous helium, with an automated helium plant capable of recycling gaseous helium.[2] In 2006 the company finished a carbon dioxide treatment plant capable of recovering and recycling 1-3 tonnes of carbon dioxide per hour.[3]