Group 1 - The core viewpoint of the article highlights the declining use of traditional membrane gas meters among end users, with a shift towards smart gas meters as the primary choice for downstream customers [2] - The market penetration rate of smart gas meters is expected to continue increasing, driven by urbanization and the replacement of existing products in the market [2] - The maturity of ultrasonic gas meter technology is anticipated to accelerate domestic substitution, leading to a sustained increase in its market penetration rate, with ultrasonic gas meters likely becoming the market mainstream in the future [2] Group 2 - The ongoing effects of the national policy for the renovation and replacement of aging urban gas pipelines are becoming evident, indicating that the demand for gas meter updates and replacements will further be released [2]