Group 1 - Shenzhen Gas Group Co., Ltd. has obtained a patent for a "one-way self-closing valve," with the authorization announcement number CN223063237U, applied on September 2024 [1] - The patent relates to valve technology, specifically providing a one-way self-closing valve that includes a valve body with an intake and an outlet channel, and a one-way valve set in the intake channel [1] - The design of the one-way self-closing valve aims to prevent erroneous disconnection due to sudden pressure drops in the pipeline caused by external factors, such as the activation of a water heater, thereby enhancing user convenience and practicality [1] Group 2 - Shenzhen Gas Group Co., Ltd. was established in 1996 and is primarily engaged in gas production and supply [2] - The company has a registered capital of 2,876.77 million RMB and has invested in 32 enterprises, participated in 5,000 bidding projects, and holds 578 patents [2] - Additionally, the company has 92 trademark registrations and 1,807 administrative licenses [2]