中国汽研申请应用于测试密封条撞击异响临界速度的试验装置及方法专利，解决现有技术中无法有效测试密封条撞击异响的难题

Group 1 - The company, China Automotive Engineering Research Institute Co., Ltd., has applied for a patent for a testing device and method for measuring the critical speed of impact noise from sealing strips [1] - The patent application was published under CN120121315A, with an application date of April 2025 [1] - The invention addresses the challenge of effectively testing impact noise from sealing strips, which is a significant issue in current technology [1] Group 2 - China Automotive Engineering Research Institute Co., Ltd. was established in 2001 and is located in Chongqing, primarily engaged in professional technical services [2] - The company has a registered capital of 1,004.18 million RMB [2] - The company has invested in 33 enterprises, participated in 5,000 bidding projects, and holds 1,813 patents [2]