短纤：短期震荡市，多PF空PR，瓶片：短期震荡市，多PF空PR瓶片

Group 1: Report Industry Investment Rating - The report suggests a short - term volatile market for both short - fiber and bottle - chip, with a strategy of going long on PF and short on PR [1] Group 2: Core Viewpoints - The short - fiber and bottle - chip markets are in a short - term volatile state, and the recommended trading strategy is to go long on PF and short on PR [1] Group 3: Summary by Relevant Catalogs 1. Fundamental Tracking Short - fiber (PF) - Futures prices of short - fiber 2509, 2510, and 2511 increased by 26, 26, and 2 respectively compared to the previous day. PF09 - 10 remained unchanged, while PF10 - 11 increased by 24. PF basis decreased by 11. The short - fiber持仓量 decreased by 2146, and the short - fiber成交量 decreased by 8352. The short - fiber East China spot price increased by 15, and the short - fiber production - sales ratio decreased by 15% to 56% [1] Bottle - chip (PR) - Futures prices of bottle - chip 2509, 2510, and 2511 increased by 34, 36, and 40 respectively compared to the previous day. PR09 - 10 decreased by 2, and PR10 - 11 decreased by 4. PR主力基差 increased by 24. The bottle - chip持仓量 increased by 468, and the bottle - chip成交量 increased by 2445. The bottle - chip East China spot price increased by 60, and the bottle - chip South China spot price increased by 20 [1] 2. Spot News Short - fiber - PF futures fluctuated strongly. Factory quotes were mostly stable, with local discounts in Fujian narrowing. Downstream follow - up willingness was low. Basis quotes of futures - cash and traders weakened slightly. The mainstream price of semi - bright 1.4D was in the range of 6350 - 6700. Factory sales were relatively weak, with an average production - sales ratio of 57% by 3:00 pm [1] Bottle - chip - Upstream polyester raw material futures rose. Polyester bottle - chip factory quotes were partially raised by 10 - 30 yuan. The market trading atmosphere was light, with South China at a premium to East China. Orders from August to October were mostly traded at 5880 - 6000 yuan/ton ex - factory, with a small amount slightly lower at 5850 - 5870 yuan/ton ex - factory [2] 3. Trend Intensity - The trend intensity of short - fiber and bottle - chip on the reporting day's daytime session of the main - contract futures price fluctuations was 0, indicating a neutral state [3]