BEIJING - When LanzaTech, a company that turns industrial waste gas into fuel and chemical products, tried to bring its technology to the market, it sought partnerships in the United States.

But it did not happen. In the end, it was in China that the bioenergy startup found some of its first industrial backers.

Baosteel Group and Shougang Group, two major steelmakers, established joint ventures with LanzaTech, laying the foundation for the company's commercialization.