短纤：关注成本波动率放大，高位震荡，瓶片：关注成本波动率放大，高位震荡

Report Overview - The report focuses on short fiber and bottle chip futures, providing fundamental tracking, spot news, and trend strength analysis [1][2] Industry Investment Rating - Not provided in the report Core Viewpoints - Short fiber and bottle chip futures are expected to experience high - level fluctuations with increased cost volatility [1] Summary by Directory Fundamental Tracking Short Fiber - Futures prices: Short fiber 2507 was at 6594, up 4 from the previous day; 2508 was at 6510, up 30; 2509 was at 6442, up 182 [1] - Spread: PF07 - 08 was 84, up 34; PF08 - 09 was - 152, down 152; PF basis was 140, unchanged [1] - Position and volume: The position was 281488, down 4869; the volume was 366006, down 121099 [1] - Spot price and sales: The East China spot price was 6650, up 30; the sales - to - production ratio was 62%, down 72% [1] Bottle Chip - Futures prices: Bottle chip 2507 was at 6068, up 34; 2508 was at 6046, up 40; 2509 was at 5980, up 8 [1] - Spread: PR07 - 08 was 22, down 6; PR08 - 09 was 66, up 32; PR main contract basis was 70, up 22 [1] - Position and volume: The position was 41530, up 1233; the volume was 60988, down 18649 [1] - Spot price: The East China spot price was 6050, up 30; the South China spot price was 6170, down 30 [1] Spot News Short Fiber - Futures were strongly volatile. Factory quotes were stable, with discounts for negotiation. The average sales - to - production ratio was 62%. Downstream yarn prices were stable, with few orders and weak sales [1] Bottle Chip - Polyester raw material futures closed higher. Factory quotes were partially raised by about 50 yuan, and a few were slightly lowered. Market transactions were light, with 6 - 8 month orders mostly traded at 5980 - 6140 yuan/ton ex - factory [2] Trend Strength - Short fiber trend strength was - 1; bottle chip trend strength was - 1, indicating the daily - session main contract price fluctuations on the report day [2]