In 2012, industrial conglomerate China Wanxiang Holdings signed a $1.25 billion deal with American company GreatPoint Energy to build a large-scale plant using GreatPoint's catalytic hydromethanation process of coal gasification. The technology converts coal into natural gas and enables the recovery of contaminants in coal, petroleum coke and biomass as useful byproducts. Most importantly, nearly all of the CO2 produced in the process is captured as a pure stream suitable for sequestration or enhanced oil recovery.[45] The total project will cost an estimated $20 – 25 billion and will supply a trillion cubic feet of natural gas.[46] This represents a massive leap in the scale of domestic production for China, which last year produced only 107 billion cubic feet of natural gas.[47] The deal includes an equity investment of $420 million, the largest ever by a Chinese corporation into a venture-capital-funded U.S. company, according to industry tracker VentureSource.[45]