Patent on Bidirectional blockage-free gear-driven special electromechanical valve for gas meter (CN101907194 A)

Patent on GSM intelligent gas meters terminal with a SIM card (CN101526815 B)

Patent on Intelligent and comprehensive management system for water, electricity, gas and heat meters based on internet of things (CN102360469 B)

Patent on Intelligent gas meter of Internet of things and control system thereof (CN102063764 B)

Patent on Internet of things automotive intelligent control instrument and internet of things automotive intelligent management system (CN103309315 A)

Patent on Smart Gas Meter offline data validation method (CN103325184 B)