At present, some refineries have been able to achieve the national four standard , oil , and currently the total Chinese goods FCC gasoline gasoline group accounted for 70%. Pellet linesulfur, olefins commodities accounted for total sulfur content, total olefin content of 90% and 90%. So you want to upgrade the oil , the core is FCC gasoline desulfurization, machine for pellets of the problem . It is foreseeable that the relevant catalyst and having clean technology companies will also be upgraded in the oil market space added benefit .