Liuzhou YuanChuang EFI Technology Co., Ltd.is a professional corporation that is combined with researching and manufacturing development in automobile ,motorcycle and SCR system injector area.we are one of the units which drafted two national standards of gasoline engine solenoid valve injector, namely, "Gasoline Engine Solenoid Valve Injector's Technical Conditions" and" Gasoline Engine Solenoid Valve Injector's Test Methods"...