Announcement on the Change in the Public Tender for Basic Design Services for CNOOC Refining & Chemicals Daxie Petrochemical’s Ultra-High Molecular Weight Polyethylene Project – Total Investment of 10.18 billion yuan

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On March 19, an announcement was issued regarding the change in the public bidding process for the foundation design services of Sinopec Daxie Petrochemical’s ultra-high molecular weight polyethylene project. On March 16, a tender was issued for the foundation design services for the Daixie Petrochemical ultra-high molecular weight polyethylene project. The Phase 6 Distillate Project of CNOOC Ningbo Daxie Petrochemical Co., Ltd. (a project focused on high-end functional materials, hereinafter referred to as the Daxie Phase 6 Project) is an initiative by Daxie Petrochemical to build, based on its existing industrial foundation, a integrated refining and chemical processing facility that is large in scale, technologically advanced, and highly competitive. High-functionality material projects developed by leveraging in-house resources such as ethylene, liquefied gas, catalytic slurry, and vacuum residue. The main facility of the proposed project is located on the south side of the Taiping Petrochemical Plant site in Beilun District, Ningbo. Among them, a new ultra-high molecular weight polyethylene plant with an annual production capacity of 40,000 tons is planned to be built, producing 40,000 tons of powder per year. The plant is expected to operate for 8,000 hours per year, with a design flexibility range of 60% to 110%. The raw materials for the unit are ethylene and hydrogen produced by upstream units, as well as purchased hexane, etc. According to public information, the total investment in this project amounts to 1,018,418 million yuan. The Phase 6 project of Daxie Petrochemical includes facilities for producing 100,000 tons per year of polyolefin elastomers (HPOE), 40,000 tons per year of ultra-high molecular weight polyethylene (UHMWPE), 150,000 tons per year of products derived from butane derivatives (including MTBE/1-butene), and 300,000 tons per year of high-end carbon materials (such as acicular coke). Project timeline: On March 26, 2025, Daxie Petrochemical and the Beilun District Government officially signed the investment agreement for Phase 6 of the project. On August 11, 2025, an announcement was issued regarding the procurement plan for energy efficiency assessment and acceptance services for the Phase 6 project of Daxie Petrochemical. Scope of procurement and key technical specifications: Assist the owner in completing the filing and review processes at CNOOC’s headquarters, prepare energy-saving reports for the C4 comprehensive utilization project as well as for the ultra-high molecular weight polyethylene project, and arrange for the internal expert review meetings held by CNOOC along with the related conference expenses. On October 17, 2025, the 100,000-ton/year HPOE project at Daxie Petrochemical was approved for registration. In January 2026, the list of candidates shortlisted for the general contract for the process technology, engineering design, procurement, and construction (TBEPC) of the C4 comprehensive utilization project at Zhonghai Refining & Chemical Daxie Petrochemical was made public. Name of the winning bidder: Shanghai Hetu Engineering Co., Ltd.