JRJ News, July 24, 2025: Information from the State Intellectual Property Office (SIPO) shows that Zhejiang Aibo Security Technology Co., Ltd. has obtained a patent entitled "A Built-in Oil Pressure Supply Structure for Door Closers", with the authorization announcement number CN223135917U and the application date in September 2024.

The patent abstract indicates that this utility model discloses a built-in oil pressure supply structure for door closers, comprising a protective outer shell and a movable frame installed inside the protective outer shell. A piston head is installed at one end of the movable frame, and a hydraulic support cylinder is arranged on one side of the piston head; the movable frame is slidably installed inside the hydraulic support cylinder. Flow ports are formed on the inner wall of the hydraulic support cylinder, with a number of flow ports penetrating to the outer side of the hydraulic support cylinder. A hydraulic oil tank is installed at the upper end of the hydraulic support cylinder, and the interior of the hydraulic support cylinder is communicated with the interior of the hydraulic oil tank through the flow ports. A sealing plate is slidably connected between the hydraulic support cylinder and the hydraulic oil tank. This utility model gradually seals multiple flow ports through the sealing plate, which facilitates gradually slowing down the moving speed of the door during automatic reset, effectively preventing strong impact during reset, and thus realizing automatic deceleration control of door closing.

According to data from Tianyancha (a Chinese enterprise information query platform), Zhejiang Aibo Security Technology Co., Ltd. was established in 2021 and is located in Lishui City. It is an enterprise mainly engaged in the metal products industry, with a registered capital of 12.8 million RMB. Through big data analysis of Tianyancha, Zhejiang Aibo Security Technology Co., Ltd. has participated in 2 bidding and tendering projects, has 2 trademark information items and 21 patent information items in terms of property clues, and additionally holds 2 administrative licenses.