The product quality of Tengen Group has been strictly controlled in each working procedure, many kinds of internationalization standard quality guaranteed system can be highly effective under company's strict monitoring. fellowtrader commended, customer's approval can sufficiently make sure of our product quality. Tengenwas evaluated as Chinese famous trademark, Tengen Group has obtained American FMRC Corporation ISO9001 quality system authentication, ISO14001 environment management system authentication, CCC authentication, European Union CE safe Authentication, American UL authentication and Dutch KEMA authentication and so on, at the same time, it has had the first side laboratory low voltage electric appliance test center which is the first connected with international in China