上半年投产节奏放缓，关注库存去化进程

Report Industry Investment Rating - The investment rating for the polyolefin industry is neutral on a single - side basis [2][12] Core Viewpoints of the Report - In 2026, the growth rate of polyolefin capacity expansion will slow down, especially in the first half of the year when there will be a new - production vacuum period. The first half of the year will focus on digesting the existing high inventory of polyolefins. However, the demand support before the Spring Festival is weak, and the inventory is expected to remain at a high level. It is recommended to maintain the reverse spread strategy for the 01 - 05 month inter - period spread. In March, as the "Golden March" peak season, polyolefin demand may seasonally recover, and the inventory is expected to start the destocking process. The annual strategy recommends the positive spread strategy for L05 - 09 and PP05 - 09 inter - period spreads. In 2026, the new PE production will mainly be non - standard HDPE, and the proportion of standard linear production is relatively low. It is recommended to short non - standard products and long standard linear products to narrow the non - standard price spread [2][12] Summary According to the Directory Market News and Important Data - New production: In 2026, the total new PE capacity will be 4.74 million tons per year, with a capacity growth rate of 11.9%, which is slower than in 2025. Most of the new production will be concentrated in the second half of the year, and only BASF's 500,000 - ton FDPE device will be put into production in the first half. For PP, the new capacity in 2026 will be 4.4 million tons per year, with a capacity growth rate of 8.8%, significantly slower than in 2025, and the new production will mainly be concentrated in Q3 - Q4 [7] - Inventory: After the "Golden September and Silver October" peak season, the polyolefin inventory has not been effectively destocked and remains at a high level. In 2026, especially in the first half of the year, the focus will be on digesting the existing high inventory. But before the Spring Festival, the demand is weak, and the inventory is expected to remain high until March [7] Market Analysis - Production in 2025: From January to October 2025, the total domestic polyethylene production was 26.195 million tons, a cumulative year - on - year increase of 14%. The total domestic polypropylene production was 31.86 million tons, a cumulative year - on - year increase of 11%, with the cumulative year - on - year increase in drawn wire production being 8% [8] - Demand in 2025: From January to October 2025, the cumulative year - on - year growth rate of plastic product output was 0.5%, with the main growth coming from industries such as automobiles, home appliances, and express delivery. The cumulative year - on - year growth rate of plastic product export value was - 1.0%, and the cumulative year - on - year growth rate of primary - shaped plastic import volume was - 7.6%. The downstream demand for PE and PP is generally weak [9] Polyolefin Market Review and Basis Structure - PE market: The plastic main contract shows the trend of the main contract, basis, and inter - period spread from 2023 to 2025 [19] - PP market: The domestic polypropylene market in 2025 showed a trend of continuous decline followed by low - level oscillation. It can be divided into three stages: the decline stage from January to May, the short - term support stage from June to August, and the low - level oscillation stage from September to the end of the year [22][23] Polyolefin Capacity Expansion - 2026 China's polyolefin production rhythm: The production rhythm of polyolefins in China will slow down in 2026, especially in the first half of the year. The new PE capacity in 2026 is 4.74 million tons per year, and the new PP capacity is 4.4 million tons per year [27][33] - 2025 overseas polyolefin production: In 2025, the total overseas new polyethylene capacity was 2.382 million tons, and there was an expected 1.85 - million - ton PP capacity expansion, with 600,000 tons in India already realized [35][38] Polyolefin Maintenance - PE maintenance by process: In 2025, the overall PE device maintenance volume remained high. Oil - based and alkane - based maintenance volumes were relatively large, while coal - based maintenance volume was similar to the same period [41] - PP maintenance by process: In 2025, the PP device maintenance volume continued to be high. Oil - based and PDH - based maintenance volumes were higher than the same period, while coal - based maintenance volume changed little [44] - Polyolefin operating rate forecast: The PE operating rate is expected to recover, and the PP operating rate is also expected to increase, but attention should be paid to the raw material supply and profit of PDH devices [53] Polyolefin Domestic Supply and Import - Export - Domestic polyolefin production: In 2025, the monthly PE output exceeded 2.6 million tons, and from January to October, the total production was 26.195 million tons, a cumulative year - on - year increase of 14%. The total domestic polypropylene production from January to October was 31.86 million tons, a cumulative year - on - year increase of 11% [63] - Polyolefin production profit and operating rate: In 2025, the polyolefin production profit was mainly affected by raw material prices, and the operating rate was generally low. The operating rate of alkane - based PE and PP devices was affected by Sino - US trade conflicts [68] - Polyolefin non - standard price spread performance: In 2025, the LLDPE operating rate increased significantly, and the non - standard price spread of PE is expected to narrow in 2026. The PP non - standard price spread showed a trend of narrowing and then rising [77] - Polyolefin import - export situation: From January to October 2025, China's cumulative polyethylene imports decreased by 3% year - on - year, and cumulative polypropylene imports decreased by 8% year - on - year. The PE external dependence is decreasing, and PP is gradually changing to an export - oriented product [95] - Polyolefin domestic - foreign price spread: In 2025, the LLDPE import window was mostly closed, and the export window was also closed. The PP import and export windows were mainly closed, but the Southeast Asian PP demand showed a slight recovery [103] Polyolefin Demand and Inventory - Polyolefin downstream demand: From January to October 2025, the domestic plastic product demand increased slightly, but the external demand was weak. The downstream demand for PE and PP was generally insufficient, waiting for policy - driven stimulation [125] - Polyolefin inventory: In 2025, the polyolefin inventory remained high. In 2026, especially in the first half of the year, the focus will be on digesting the high inventory, and the inventory is expected to start destocking in March [155][157]