Shenzhen Uniontop Electronics Co., Ltd. was established in 2001,a professional manufacturer which is specializing in researching, developing, manufacturing and marketing switching power supply, AC/DC power adapter, USB charger ,Switching power supply transformer, computer cable. Our products are mostly certified by PSE(Japan), UL,FCC(USA),CUL(Canada),CE(Europe),GS(Germany),CCC(China),SAA(Australia), BS(England),KC(Korea),PSB(Singapore),CB,C-TiICK,ENERGYSTAR,ERP,EUP,MEPS etc.