On April 16, 2025, the "Seminar on General Technical Requirements and Standards for Steel-Aluminum Composite Anti-riot Armored Doors and Hardware" was successfully held at the Ziwei Mingzhu Hotel in Yongkang City, Zhejiang Province. Over 100 people from units such as LAN Dun, Bu Yang, Wang Li, the Shanghai Testing Center of the Ministry of Public Security, the China Academy of Building Research, and the Yongkang Quality Supervision Institute, which are involved in the door industry, hardware, and testing centers, attended the meeting. The meeting was presided over by Lu Sai, the executive president of the Blue Shield Group.
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