Sinopec’s Hainan Ethylene is set to take its polypropylene (PP) production offline in mid‑October, with maintenance scheduled from October 10 through October 20, 2025, according to a Polymerduniya insider. During this planned shutdown, the plant, located in Hainan, China, will be offline for approximately ten days to carry out essential servicing of core processing units. The facility has an annual production capacity of 200,000 metric tons.
Although the company has not disclosed the duration of downtime in detail, the outage is expected to impose temporary tightening on regional PP supply. The upcoming maintenance coincides with parallel shutdowns at other major PP units in the country, including Sinopec Guangzhou’s No. 3 plant (offline October 10–December 5) and PetroChina Dushanzi Petrochemical’s No. 4 unit (7‑day closure in late August).
With regional markets already facing margin pressure due to oversupply and subdued demand, analysts anticipate this brief maintenance window may provide modest support to polypropylene pricing, if and when downstream buyers resume active procurement.
