Sichuan Changyi has been certified with Certificate of Nuclear Industry Quality Management System for 3 -year valid period from September 30 2015 to September 29 2018, i.e. Changyi Products of regulator, globe valve, throttle valve, electrical regulator, draining valve, gas gathering regulators (A), gas safety valve, pressure vessel (A1, A2 under Grade III) are accessible to supply  in China Nuclear Industry.