Group 1 - Jiangsu Hengshang Energy-saving Technology Co., Ltd. applied for a patent for a "dual-mode testing instrument for air tightness and water tightness of curtain walls" with publication number CN120313810A, filed on April 2025 [1] - The patent aims to improve efficiency in the field of curtain wall testing technology, featuring a ground-based base frame and a gantry frame, with a load balancer for balancing force [1] - The invention utilizes a closed cavity structure combined with a water tank and a bidirectional pump, allowing for integrated air tightness and water tightness testing while reducing process steps and equipment setup costs [1] Group 2 - Jiangsu Hengshang Energy-saving Technology Co., Ltd. was established in 2012 and is located in Wuxi City, primarily engaged in building decoration, renovation, and other construction industries [2] - The company has a registered capital of 1,829.33334 million RMB and has made investments in three enterprises, participated in 737 bidding projects, and holds 465 patents [2] - Additionally, the company has 19 trademark registrations and 56 administrative licenses [2]