Group 1 - The core viewpoint of the news is that Zhejiang Zhongtuo Group (Zhejiang) New Material Technology Co., Ltd. has applied for a patent for an automated surface polishing device for automotive screw wire, aimed at improving efficiency and reducing labor costs in the automotive manufacturing sector [1][2] Group 2 - The patent application, titled "Automated Surface Polishing Device for Automotive Screw Wire," was filed on September 2025, and it addresses the low automation level of existing devices that require manual loading and unloading [1] - The device includes a polishing platform with a movable driving platform and a polishing machine, designed to automate the feeding, polishing, and unloading processes, significantly lowering labor intensity and costs while minimizing quality fluctuations caused by manual operations [1] Group 3 - Zhejiang Zhongtuo Group (Zhejiang) New Material Technology Co., Ltd. was established in 2017 and is located in Jiaxing City, primarily engaged in black metal smelting and rolling processing [2] - The company has a registered capital of 100 million RMB and has made investments in one other enterprise, participated in 238 bidding projects, and holds 22 patents along with 12 trademark registrations [2]