Group 1 - A customer reported issues with a Keda Xunfei learning machine purchased in November 2024, which malfunctioned after eight months of use, leading to a dispute over warranty coverage and repair costs [1][2] - The customer was initially quoted a repair cost of 1000 yuan, which later increased to over 3000 yuan after further inspection revealed additional damage [2][3] - Keda Xunfei's customer service stated that the device showed signs of water damage, which voided the warranty, and the company offered a discounted repair price after mediation with regulatory authorities [3] Group 2 - Keda Xunfei, established in 1999, is a prominent player in the AI and intelligent voice technology sector, listed on the Shenzhen Stock Exchange since 2008 [3] - The company's smart education business accounted for 32.36% of its revenue in the first half of 2025, maintaining a gross margin of 51.92%, which reflects a slight increase from the previous year [4][5]