Beijing Hengrun Science and Technology Co.Ltdis the biggest electronics agent in china,We are the agent of MITSUBISHI,SANREX,SANKEN,FUJI,TOSHIBA,SIEMENS,SEMIKRON,MOTOROLA,IR,PRX,ABB,EUPEC,HITACHI,IXYS,FAIRCHILD and so on.We engage in many kinds of electronics include: GTR,IGBT,IPM, PIM,Silicon Controlled Rectifier(SCR) , Quick Recovery Diode , Power Bridge Rectifiers, Filed-Effect Module , Electrolytic Capacitor of��Hitachi Co., Ltd., American��DE, Absorb��igh��requency��oninductive Capacitor, JAPAN High- Power Trigged Resistance Fuse , Importable Super Rapid Fuse , Drive Circuit of Diversified��Importable Brands, Electrical Outlet for��MITSUBISH's IPMs,Optoelectronic Couplers ,Current Voltage Sensor of��LEM and American VICOR.Co., Nihon LAMBDA. Co., Nihon TDK Co., Nihon Cosel.Co, ASTEC in Hong Kong; American LUCENT Co., and so on .and they produced products of DC/DC,AC/DC, and Correction Power Module,all series of DC/DC Special Cooling Fin for Supporting importation of power module.website: http://www.ic-module.com/Yahoo ID:modulesupplierMobile phone:86 13810693095Skype: modulesupplier