Kumera Technology Center Kumera Machinery Kumera Technology Center (KTC) serves copper and nickel smelters as well as the metallurgical and mining industries generally, by supplying main process equipment and process modernization services. Read more Kumera Machinery Oy is an active subcontractor of equipment for the mining and metallurgical industry. We have supplied dozens of converters, furnaces, kilns and other rotary type of equipment all over the world. Read more Kumera Corporation, Kumerankatu 2, FI-11100 Riihimäki, Suomi | Puh. +358 20 7554 200 | sales@kumera.com | Legal notice