Report Industry Investment Rating - Unilateral: Neutral; Inter - period: PL01 - 02 short at high prices; Inter - variety: None [3] Core Viewpoints - The cost support for propylene has weakened, leading to a decline in its price. Supply is supported by some PDH device maintenance and restart delays, while demand is weak due to price drops and cost pressure. The cost support is weakened by falling international oil prices and propane prices, but the impact of Sino - US trade frictions on propane supply needs attention [1][2] Summary by Relevant Catalogs 1. Propylene Basis Structure - Include figures on the closing price of the propylene main contract, East China and North China basis, 01 - 05 contract, and East China and Shandong market prices [6][9][11] 2. Propylene Production Profit and Operating Rate - Include figures on the difference between propylene CFR in China and naphtha CFR in Japan, propylene capacity utilization rate, PDH production gross profit and capacity utilization rate, MTO production gross profit, methanol - to - olefin capacity utilization rate, propylene naphtha cracking production gross profit, and crude oil refinery capacity utilization rate [16][23][25] 3. Propylene Import and Export Profit - Include figures on the differences between FOB in South Korea, CFR in Japan, CFR in Southeast Asia and CFR in China, and propylene import profit [32][34] 4. Propylene Downstream Profit and Operating Rate - Include figures on the production profit and operating rate of PP powder, propylene oxide, n - butanol, octanol, acrylic acid, acrylonitrile, and phenol - acetone [40][42][45] 5. Propylene Inventory - Include figures on propylene factory inventory and PP powder factory inventory [65]