Chengdu HongShengkang Mechanical and Electrical Engineering Co., Ltd. was established on September 20, 2017, the main business is electrical, mechanical and electrical, pipeline and equipment installation engineering, but also for solenoid valve, instrumentation, gas equipment and fire equipment sales. Alstad provides industrial combustible gas detectors, such as ASD5300, ASD5380 and other combustible gas detectors, which convert the concentration of combustible gas in the site into electrical signals and transmit them to the monitoring equipment in the safety zone to protect the safety of life in the industrial site.