As a professional manufacturer from china since 1997, we have export our products to more than sixty countries and averagely deliver more than thirty 20'GP Containers per month. And with Good quality, Excellent after-sales services, Favorable price, Powerful R&D ability, we believe we would achieve more. In conformity to IEC34-1and JB/T8981-1999 standard; Compound excitation, simple circuit, high reliability, easy maintenance; Excellent dynamic characteristics, when load or unload suddenly, the circuit's light will not twinkle; Stable output voltage suitable for sensitive electronic equipment such as computers, etc.