液化石油气（LPG）投资周报：需求结构性转变，PG偏强震荡运行-20250915

Report Industry Investment Rating - The investment view on LPG is "oscillating", indicating a neutral stance in the short - term [4]. Report's Core View - The LPG market shows a situation of "weak oil and strong gas". PG prices are firm due to freight and capital factors. The supply - demand contradiction of propylene in the intermediate link is alleviated, and the terminal PP demand is saturated, resulting in continuous and substantial losses in PDH profits. In the short - term, PG prices are expected to oscillate strongly, with a relatively low current valuation. Attention should be paid to the flow of warehouse receipts and geopolitical risks [4]. Summary by Relevant Catalogs 1. Market Review - The main contract of LPG futures fluctuated and rose, with a range of 4360 - 4470 yuan/ton. The spot price trend was weaker than the futures, and the basis weakened. International crude oil prices first fell and then rose, and the trend of PG futures was basically the same as that of crude oil. International LPG prices increased, but domestic spot prices showed both increases and decreases. Chemical demand declined significantly, and the profits of multiple chemical plants continued to be in the red. The internal valuation of futures prices was neutral. The weekly average basis was 37 yuan/ton in East China, 120 yuan/ton in South China, and 30 yuan/ton in Shandong, with the lowest deliverable standard being in Shandong [7]. 2. Influencing Factors Supply - Last week, the total commercial volume of LPG was about 53.74 million tons, including 20.52 million tons of civil gas, 21.04 million tons of industrial gas, and 17.89 million tons of ether - after carbon four. The arrival volume of LPG last week was 65 million tons. With the resumption of some devices in East China and Shandong last week, the supply increased. A refinery in Shandong plans to conduct maintenance this week, and it is expected that the domestic commercial volume may decline [4]. Demand - The combustion demand is gradually coming to an end, and the traditional peak - season logic is weakening, but the price of civil gas remains firm in the short - term. In the carbon - four deep - processing sector, affected by new - energy substitution, gasoline demand has weakened. The profit of MTBE is inverted, but the operating rate is at a high level. The profit of alkylated gasoline has changed from profit to loss, and the loss of isobutane dehydrogenation profit is relatively deep. The ether - after market may decline and stabilize. In the carbon - three deep - processing sector, the utilization rate of PDH production capacity is relatively stable, and the operating rate remains at a medium - to - high level. The price of propylene in the intermediate link has declined, and the terminal PP demand is saturated. There are continuous losses from the PDH device to the propylene and PP links [4]. Inventory - Last week, the factory inventory of LPG was 17.91 million tons, and the port inventory was 318.65 million tons. The domestic LPG inventory continued to increase. Although the trading and transportation capacity resumed after the end of large - scale domestic events, the inventory pressure in some northern regions was gradually relieved. However, in other regions, due to increased supply and weak demand, the shipment volume decreased to varying degrees, and the refinery storage capacity utilization rate continued to rise. At the ports, the number of incoming ships decreased slightly, but the unloading volume was more than the arrival volume, with little change compared to last week. Coupled with the downward trend of overall chemical demand, the port inventory increased slightly [4]. Basis and Position - The weekly average basis was a certain value in East China, South China, and Shandong. The total number of LPG warehouse receipts increased by 6, and the lowest deliverable area was Shandong [4]. Chemical Downstream - The operating rates of PDH, MTBE, and alkylation were 70.49%, 55.81%, and 46.17% respectively. The profits of PDH to propylene, MTBE isomerization, and alkylation in Shandong were - 52 yuan/ton, - 291 yuan/ton, and - 180.50 yuan/ton respectively [4]. Valuation - The PG - SC ratio was a certain value, and the PG continuous - one to continuous - two month spread was a certain value. With the continuous increase in crude oil production, the cost segment was dragged down, and the PG - SC cracking spread continued to strengthen [4]. Other Factors - In October, OPEC+ increased production by 137,000 barrels again, starting the second round of the production - increase cycle to regain market share. The US non - farm payrolls data in August was lower than market expectations, with an increase in the number of unemployed, a month - on - month decline in PPI and CPI, and an enhanced expectation of economic slowdown and interest - rate cuts. The geopolitical situations in Russia - Ukraine, US - Venezuela, and the Middle East still tend to be tense, and the war may further escalate [4]. 3. Trading Strategy - For unilateral trading, it is recommended to wait and see temporarily. For arbitrage, the strategies are to go long on PP2601 and short on PL2601, go long on PP2601 and short on PG2601, and go long on PG2510 and short on SC2510 [4].