Core Viewpoint - Dongyue Group (00189) has experienced a significant decline in stock price, dropping over 7% in a single day and more than 16% for the week, primarily due to poor financial performance from its subsidiary Dongyue Silicon Materials [1] Financial Performance - Dongyue Silicon Materials (300821.SZ) is expected to report a net profit decline of approximately 96.27% to 97.40% year-on-year for the first three quarters [1] - The net profit, excluding non-recurring gains and losses, is anticipated to decrease by about 87.10% to 88.14% year-on-year [1] Market Impact - The decline in sales revenue and gross margin is attributed to the fluctuating prices of silicone products [1] - Operational losses due to a fire incident at the synthetic phase B bed have negatively impacted the company's performance [1]