China Petrochemical Corporation Shijiazhuang Refining And Chemical Branch Re-Recruited (The First Re-Recruitment) Shijiazhuang Refining No. 2 Gas Separation Gas Desulfurization Area Pressure Vessel Equipment Update Petrochemical Special Equipment Plate Tower\Φ2200×12000~13000×(3+18) Q345R (Hic) Without Internal Parts Class Iii Bidding Announcement [Change Announcement]