Information on 5th of April,2017, in the 2015-2016 annual national chemical construction selection event organized by China Chemical Construction Enterprise Association, CC7’s 3 scientific & technological achievements: “Catalytic cracking unit anti-regenerating setter, regenerator site fabrication & erection method”, “Welding method of Man900 furnace for hydrogen conversion device” and “Construction method for large concrete casing pipe jacking” were rated as 2015-2016 annual national chemical construction methods.