港口库存大幅下降，但本周可能回升

Report Summary 1. Investment Rating - No investment rating for the industry is provided in the report. 2. Core Views - Market Analysis: The closing price of the main EG contract was 4,267 yuan/ton (down 4 yuan/ton or -0.09% from the previous trading day), the spot price of EG in the East China market was 4,335 yuan/ton (down 5 yuan/ton or -0.12% from the previous trading day), and the spot basis of EG in East China (based on the 2509 contract) was 64 yuan/ton (down 3 yuan/ton month-on-month). The production profit of ethylene-based EG was -$79/ton (down $3/ton month-on-month), and the production profit of coal-based syngas EG was 17 yuan/ton (down 20 yuan/ton month-on-month). The inventory of MEG at the main ports in East China was 54.5 tons (down 7.7 tons month-on-month) according to CCF data on Mondays and 50.6 tons (down 3.1 tons month-on-month) according to Longzhong data on Thursdays. The actual arrival at the main ports last week was 6.7 tons, with low arrivals and significant inventory reduction. This week, the planned arrival at the main ports in East China is 15 tons, and inventory may rise again [1]. - Supply - Demand Logic: Domestically, the supply is gradually recovering, and the short - term supply - demand structure shows a benign inventory reduction, but the circulating spot will be supplemented after the cancellation of warehouse receipts. Overseas, recent restarts of overseas plants indicate a loose supply, with concentrated arrivals in early July. The demand is currently strong, but several major bottle - chip manufacturers plan to conduct maintenance in early July, so the demand is expected to be weak [2]. - Strategy: The unilateral strategy is neutral. With increasing supply and decreasing demand, it shows a short - term weak performance, but the downside is limited. There are no cross - period or cross - variety strategies [3]. 3. Summary by Directory 3.1 Price and Basis - The closing price of the main EG contract was 4,267 yuan/ton, and the spot price of EG in the East China market was 4,335 yuan/ton. The spot basis of EG in East China (based on the 2509 contract) was 64 yuan/ton [1]. 3.2 Production Profit and Operating Rate - The production profit of ethylene - based EG was -$79/ton, and the production profit of coal - based syngas EG was 17 yuan/ton [1]. 3.3 International Price Difference - No specific content about international price difference is provided in the text. 3.4 Downstream Sales, Production, and Operating Rate - No specific content about downstream sales, production, and operating rate is provided in the text. 3.5 Inventory Data - The inventory of MEG at the main ports in East China was 54.5 tons according to CCF data on Mondays and 50.6 tons according to Longzhong data on Thursdays. The actual arrival at the main ports last week was 6.7 tons, and the planned arrival this week is 15 tons [1].