An international network backed by a group of major companies might be the key to controlling output of carbon dioxide (CO2) emissions, says the organizer of the venture, German industrial giant Siemens. “The whole thing will be a success if Siemens is only one provider among several,” Siemens board member Cedrik Neike said during the presentation of the Estainium Association at the Hanover trade fair on Monday. Organizing the network as an association of multiple key players adding their own products is supposed to support and develop the network – and ensure its independence, according to Si…