山东华通汽车模塑科技取得汽车膨胀水箱气密性检测设备及其方法专利

Group 1 - The State Intellectual Property Office of China has granted a patent to Shandong Huadong Automotive Molding Technology Co., Ltd. for a device and method for testing the airtightness of automotive expansion tanks, with the authorization announcement number CN 120521800 B and an application date of July 2025 [1] - Shandong Huadong Automotive Molding Technology Co., Ltd. was established in 2008 and is located in Jinan City, primarily engaged in the rubber and plastic products industry [1] - The company has a registered capital of 13 million RMB and has made investments in 2 other enterprises, holding a total of 82 patents and 5 administrative licenses [1]