What gas meter should I change in Xiangcheng District, Suzhou?

Internet of Things (NB-Iot) gas smart meter. NBloT networked gas meter is an intelligent gas terminal based on NBIoT technology, which integrates gas metering, intelligent management and online recharge. Suzhou, referred to as "Su" for short, was called Gusu and Pingjiang in ancient times. It is a prefecture-level city under the jurisdiction of Jiangsu Province and one of the important central cities in the Yangtze River Delta determined by the State Council.