Chengdu Qianjia Technology (成都千嘉科技股份有限公司) develops and manufactures smart metering, gas pipeline monitoring and gas safety products. It also builds IoT solutions for the gas, water, campus and urban-safety sectors. Its gas safety line includes combustible gas detectors, optical gas sensors and smart gas safety valves. Its household combustible gas detectors hold fire product certifications 2025291801000115 and 2025291801000109 from the Tianjin Fire Research Institute of the Ministry of Emergency Management.