Foreign patent

2 Foreign patent

001-Foreign Patent-US11578274 A Method and Reactor for Multistage Fluidized Catalytic Reaction of Petroleum Hydrocarbons

002-Foreign Patent-US10465125 A catalytic cracking reaction regeneration method

001-Foreign Patent-US11578274 A Method and Reactor for Multistage Fluidized Catalytic Reaction of Petroleum Hydrocarbons

002-Foreign Patent-US10465125 A catalytic cracking reaction regeneration method