NWM(SH:603700) Jin Rong Jie·2025-08-23 11:39Group 1 - Ningbo Water Meter (Group) Co., Ltd. has obtained a patent for a device used for testing circuit boards of COD monitoring instruments, with the patent announcement number CN223259709U and application date of September 2024 [1] - The patent describes a device that can progressively test the quality and interoperability of three circuit boards in smart water meters using minimal electronic components [1] - The testing process includes issuing communication commands to the control board to check the functionality of communication interfaces, servo ports, and light source connections for measuring water quality parameters such as COD and turbidity [1] Group 2 - Ningbo Water Meter (Group) Co., Ltd. was established in 1958 and is located in Ningbo City, primarily engaged in the manufacturing of instruments and meters [2] - The company has a registered capital of 201.699184 million RMB and has invested in 19 enterprises, participated in 3,394 bidding projects, and holds 742 patents [2] - Additionally, the company has 15 trademark registrations and 152 administrative licenses [2]