新增装置检修，PDH开工环比下滑

Report Investment Rating - The investment rating for the propylene industry is neutral [3]. Core Viewpoints - On the supply side, the start - up rate of PDH decreased month - on - month due to the maintenance of new units, and the reduction of propylene external sales volume supported the price in the short term. On the demand side, the start - up rates of propylene downstream industries showed a differentiated trend, with a slight improvement in short - term downstream demand, but the increase in propylene spot prices compressed downstream profits, which might suppress downstream purchasing enthusiasm. On the cost side, the decline in crude oil prices weakened cost support [2]. Summary by Directory 1. Propylene Basis Structure - Relevant figures include the closing price of the propylene main contract, the East China basis of propylene, the North China basis of propylene, the 01 - 05 contract of propylene, the market price of propylene in East China, and the market price of propylene in Shandong [7][10][12]. 2. Propylene Production Profit and Start - up Rate - Relevant figures include the difference between China CFR of propylene and Japan CFR of naphtha, propylene capacity utilization rate, PDH production gross profit of propylene, PDH capacity utilization rate of propylene, MTO production gross profit of propylene, methanol - to - olefins capacity utilization rate, propylene naphtha cracking production gross profit, and crude oil main refinery capacity utilization rate [15][20][30]. 3. Propylene Import and Export Profit - Relevant figures include the difference between South Korea FOB and China CFR, the difference between Japan CFR and China CFR, the difference between Southeast Asia CFR and China CFR, and propylene import profit [33][35]. 4. Propylene Downstream Profit and Start - up Rate - Relevant figures include the production profit and start - up rate of PP powder, the production profit and start - up rate of propylene oxide, the production profit and capacity utilization rate of n - butanol, the production profit and capacity utilization rate of octanol, the production profit and capacity utilization rate of acrylic acid, the production profit and capacity utilization rate of acrylonitrile, and the production profit and capacity utilization rate of phenol - acetone [41][43][46]. 5. Propylene Inventory - Relevant figures include propylene in - plant inventory and PP powder in - plant inventory [67].