Rongsheng (including Shengyuan) Chemical has raised its polyester filament prices by 50-200 since Saturday. DTY: 75/36 low-elasticity quoted at 8650, 150/48 low-elasticity at 7750, 150/96 low-elasticity at 8050, 300/96 low-elasticity at 7200, 300/96 light net at 7400, 300/96 heavy net at 7750. PriceSeek analysis of polyester DTY, long-short score: 1.5. The article reports that Rongsheng Chemical (including Shengyuan) has raised its DTY (polyester low-elasticity yarn) prices by 50-200 yuan since Saturday, with specific specifications such as 75/36 low-elasticity quoted at 8650 yuan/ton, indicating the company's optimistic outlook on the market, possibly due to rising raw material costs or increased downstream textile demand. This move will directly drive up the spot market prices of polyester DTY, benefiting the long side. The score is +1.5 (between generally positive and significantly positive), as the increase is significant but not extreme, possibly influenced by seasonal factors, overall supporting the spot market.