上游供应预期收缩，下游刚需跟进

Report Industry Investment Rating - Not provided in the given content Core Viewpoints of the Report - The main factors driving the recent rise in propylene prices are increased concerns about raw material supply and the expected contraction of the olefin supply. After the IEA's 32 member countries agreed to release 400 million barrels of strategic oil reserves, incidents such as tanker attacks and ship evacuations in the Middle East have led to continued concerns about the interruption of navigation in the Strait of Hormuz. Additionally, news of further production cuts at a large domestic petrochemical group's refinery has intensified the expectation of a supply contraction, pushing up olefin prices [2]. - Currently, from the perspective of propylene fundamentals, the supply of raw material propane is tight, and the profit of PDH plants is deeply in the red, increasing the likelihood of PDH plant shutdowns. Many PDH plants are expected to undergo maintenance in mid - and late March, and refinery cracking units are reducing production, further tightening propylene supply. On the demand side, downstream demand is mainly driven by rigid needs. The restart of the Dongfang Hongye plant in Shandong has increased the operating rate of PP powder, and the profits of downstream products such as butanol, octanol, and acrylic acid have improved, leading to stronger restocking intentions. In the short term, with the Strait of Hormuz remaining congested, rising costs, and a tight supply - demand situation, propylene prices are still supported [2]. Summary by Directory 1. Propylene Basis Structure - The propylene basis structure is presented through figures including the closing price of the propylene main contract, the East China basis, the Shandong basis, and the price differences between different propylene futures contracts [6][7][12] 2. Propylene Production Profit and Operating Rate - Figures show indicators such as the difference between propylene CFR in China and naphtha CFR in Japan, propylene capacity utilization rate, PDH production gross profit, PDH capacity utilization rate, MTO production gross profit, methanol - to - olefin capacity utilization rate, naphtha cracking production gross profit, and crude oil refinery capacity utilization rate [21][24][29] 3. Propylene Downstream Profit and Operating Rate - The report presents the production profits and operating rates of downstream products including PP powder, propylene oxide, n - butanol, octanol, acrylic acid, acrylonitrile, and phenol - acetone [41][42][52] 4. Propylene Inventory - Figures show the propylene in - plant inventory and PP powder in - plant inventory [67][68]