... to use&maintain 3.5V+6V output voltage 4, CE, IEC, ISO, SGS Portable battery operated generator FS-S3011. Our advantagesWe have ... ststem ----controller and inverterAll our products are approved by CE,IEC,ROHS and ISO9001, and SGSWe can do OEM and ODM ... other models in this series14, Certificate, Approved by CE,, IEC, SHS, ISO,15, Factory corner16. Introduction of product advantage1. S9 series:DC ...