Sinopec Luoyang Engineering Co., Ltd. Re-Recruited (The First Re-Recruitment) Shanghai Petrochemical Comprehensive Technical Transformation And Quality Upgrading Project 2.4 Million Tons/Year Hydrocracking Combined Unit Project Automatic Backwash Filter\Q=285714Kg/H 25Μm 250×957 Jl-Fd153 Q235B/316L Tender Announcement