Lingdong Microelectronics Co., Ltd. (stock code: 833448, stock name: Lingdong Microelectronics) is a leading supplier of MCU products and MCU application solutions in China. It is an integrated circuit design enterprise recognized by the Ministry of Industry and Information Technology of China and the Shanghai Information Office, and is also a high-tech enterprise recognized by Shanghai. Since its establishment in March 2011, Lingdong Microelectronics has successfully completed the design and promotion of hundreds of MCU products. Lingdong Microelectronics' MCU products based on ARM Cortex-M0 and Cortex-M3 cores currently in batches include: MM32F series for general high-performance market, MM32L series for ultra-low power consumption and security applications, MM32W series with multiple wireless connection functions, MM32SPIN series for motor drive and control, and OTP-type MM32P series, etc., to meet the needs of customers and the market for rich application scenarios in multiple fields and at multiple levels.