Group 1 - The core point of the article is that Zhejiang Sunny Optical Co., Ltd. has obtained a patent for a "Projection Optical System" with the authorization announcement number CN121209064B, applied on December 2025 [1] - Zhejiang Sunny Optical Co., Ltd. was established in 2001 and is located in Ningbo City, primarily engaged in the manufacturing of instruments and meters [1] - The company has a registered capital of 643 million RMB and has made investments in 21 enterprises, participated in 47 bidding projects, and holds 4,067 patent records [1]