Group 1 - Shanghai Automotive Group Co., Ltd. has applied for a patent titled "A Method and Device for Obtaining the Fatigue Life of a Drive Shaft" with publication number CN119984804A, filed on November 2023 [1] - The patent describes a method to determine the fatigue life of a drive shaft under an ejection start mode by obtaining the first torque and working angle corresponding to the drive shaft [1] - The method allows for quick calculation of the drive shaft's fatigue life in the ejection start mode without the need for bench testing, thereby reducing optimization costs and development cycles [1] Group 2 - Shanghai Automotive Group Co., Ltd. was established in 1984 and is primarily engaged in the automotive manufacturing industry, with a registered capital of approximately 11.58 billion RMB [2] - The company has invested in 59 enterprises and participated in 5,000 bidding projects, holding 1,457 trademark records and 5,000 patent records [2] - Additionally, the company possesses 522 administrative licenses [2]