Unsaturated polyester resin (UPR) manufacturing revolves around key ingredients such as phthalic anhydride, isophthalic acid, maleic anhydride, styrene monomer and glycols. Globally, polyester resins account for approximately 10% of styrene consumption and more than half of maleic anhydride demand. These resins have a wide range of applications in construction, the marine industry and the production of pipes and tanks. The demand for unsaturated polyester resin is closely related to overall economic growth, especially gross domestic product (GDP).
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