Core Viewpoint - The smartphone supply chain is experiencing a significant downturn, with major companies seeing declines in stock prices and forecasts indicating a drop in smartphone sales in China by approximately 20% year-on-year by December 2025 [1] Group 1: Company Performance - QiuTai Technology (01478) shares fell by 5.91%, trading at HKD 8.75 [1] - BYD Electronics (00285) shares decreased by 4.13%, trading at HKD 32.02 [1] - GoerTek (01415) shares dropped by 3.76%, trading at HKD 29.14 [1] Group 2: Market Forecasts - China's smartphone sales are projected to reach approximately 21 million units by December 2025, reflecting a year-on-year decline of about 20% [1] - Goldman Sachs has revised its global smartphone shipment forecasts for 2026/27 down by 6% and 5% to 1.2 billion units for both years, indicating a year-on-year change of -6% and +2% respectively [1] Group 3: Market Share - The top five smartphone brands in China by market share are Huawei (20%), OPPO (17%), Honor (14%), Vivo (14%), and Apple (13%) [1]