On June 13th, Gelunhui reported that Yandongwei (688172.SH) stated on the investor platform that the company's main businesses include two categories: products and solutions, and manufacturing and services. The products under the company's products and solutions sector include discrete devices and analog integrated circuits, special integrated circuits and devices. The manufacturing and services sector focuses on providing semiconductor open wafer manufacturing and packaging testing services. The company has already constructed a silicon photonics platform based on the market's demand. Currently, the company has achieved a breakthrough based on the SiN silicon photonic platform, with transmission loss less than 0.1dB/cm and mass produced a lidar unit and an optical communication product, achieving a product yield rate of over 95%. The company is also introducing multiple communication products that can be applied to O-Band and C-Band in different wavebands, and key device processes have been developed on the SOI silicon photonic platform.