Zhejiang Rongsheng’s new materials project, with a total investment of 76 billion yuan, is advancing at pace
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Recently, at Rongsheng New Materials (Zhoushan) Co., Ltd., the civil engineering and installation work for the Jintang New Materials project has been carried out in full swing, with solid progress being made in the foundation construction; the construction of the core storage system for the air separation unit has been completed, and the lifting of the towers is progressing smoothly. With concerted efforts from both civil engineering and installation teams, the work related to foundation safety is progressing steadily. Recently, the construction site of Zhejiang Rongsheng New Materials project has been filled with the noise of machinery and bustling activity. Excavators use their arms for digging, cranes are used for lifting operations, and all types of large-scale equipment operate in an orderly manner ； The construction workers had clear roles assigned to them, and tasks such as steel bar binding, formwork erection, and pipeline measurement were carried out in an orderly manner. Civil engineering work and installation projects were integrated seamlessly, and all tasks related to foundation preparation were completed steadily according to the planned schedule, thus laying a solid foundation for the subsequent phases of the project. As the \"keel stone\" of project construction, civil engineering directly determines the subsequent construction quality and schedule. At present, key tasks such as site grading, foundation pit excavation, and foundation pouring have successfully achieved their interim goals. At present, the handover and acceptance of the foundations for the towers on site have been fully completed, and the handover process for the foundations of the remaining equipment is progressing in an orderly manner as planned, thereby removing obstacles to the subsequent lifting of equipment and laying of pipelines.
The construction of the core storage system for the air separation unit has been fully completed. On November 16, 2025, the last vacuum liquid argon storage tank was successfully installed at the construction site of the air separation unit for the Rongsheng New Materials project, marking the completion of the construction work related to this core storage system. This lays a solid foundation for the subsequent joint testing and operational deployment of the entire facility. The core storage system of the air separation plant includes 2 vacuum storage tanks for liquid argon, 5 vacuum storage tanks for liquid nitrogen, 1 vacuum storage tank for liquid oxygen, 1 flat-bottomed storage tank for liquid oxygen, and 1 flat-bottomed storage tank for liquid nitrogen. The two liquid nitrogen vacuum storage tanks being lifted this time weigh 170 tons each and are 37.5 meters tall ； The two vacuum liquid argon storage tanks, each weighing 178 tons and standing 32.3 meters tall, serve as the core equipment for low-temperature storage. Featuring a double-layer vacuum insulation structure, they enable the long-term stable storage of liquid nitrogen and liquid argon at -196°C. As an indispensable \"gas supply hub\" in the petrochemical industry, the air separation unit’s core function is to provide the production systems with high-purity gases such as oxygen and nitrogen on a continuous and stable basis. This ensures the feasibility, safety, and economic efficiency of subsequent production processes. Once the air separation unit for the Rongsheng New Materials project is completed, it will provide reliable gas supply for the main equipment of the project, helping to improve product quality and production efficiency. It holds great significance for helping the entire project achieve its goals of green and intelligent production.
Zhejiang Rongsheng Jintang New Materials Project Photos: The Jintang New Materials Project is invested and constructed by Rongsheng Holding Group, with Rongsheng New Materials (Zhoushan) Co., Ltd. serving as the construction entity. The total investment amounts to 76 billion yuan; the project focuses on the development of high-end chemical industries such as low-carbon polyolefins, fine chemicals, high-performance resins, engineering plastics, biodegradable plastics, special polyurethanes, and new fiber materials. It involves the construction of 27 main production units and 16 utility systems. The project is located in the Jintang New Materials Park, which is situated in the reclamation area to the north of Jintang Island and forms part of the integrated development zone for Zhoushan’s green petrochemical industry. Construction contents: New construction of a 600,000-ton/year propane dehydrogenation unit, a 3 million tons/year catalytic cracking unit, a 1 million tons/year gas separation unit, a 600,000-ton/year aromatic extraction complex, a 300,000-ton/year PEO unit, a 1 million tons/year EVA complex, a 200,000-ton/year POE unit, 400,000/250,000-ton/year phenol production units, a 200,000-ton/year 1,3-propanediol unit, 400,000/880,000-ton/year PO/SM units, a 400,000-ton/year PTT unit, a 500,000-ton/year isobutane normalization unit, a 600,000-ton/year maleic anhydride unit, a 500,000-ton/year BDO unit, a 200,000-ton/year PBS unit, a 400,000-ton/year PBT unit, a 120,000-ton/year isobutylene unit, a 180,000-ton/year butene oxidation dehydrogenation unit, a 150,000-ton/year CO₂ recovery unit, a 160,000-ton/year ethoxylation unit, a 200,000-ton/year DMC unit, a 480,000-ton/year polyether polyol unit, a 1.2 million tons/year ABS unit, 2×240,000-ton/year bisphenol A units, 2×260,000-ton/year polycarbonate units, a 100,000-ton/year CHDM unit, a 100,000-ton/year PCT unit, a 100,000-ton/year PCTG unit, a 50,000-ton/year UHMWPE unit, 2×450,000-ton/year PP units, a 300,000-ton/year α-olefin unit, a 600,000-ton/year polyurethane elastomer unit, a 140,000 standard cubic meters/hour coal-to-hydrogen unit, and 2×20,000-ton/year sulfuric acid units, among other production facilities. On November 30, 2023, the main construction project for Jintang New Materials officially commenced. On December 21, 2021, a signing ceremony for the Jintang New Materials Park project was held in Zhoushan City, Zhejiang Province.
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