YiSheng Fu Electronic(SZ) Co., Ltd. was established since 2001. The company basically is an ODM & OEM based firm mainly dealing with manufacturing of Audio Systems, all sorts of HF transformers, inverter transformers , Inductors for various industries ranging from telecommunication ,LEDs Lighting ,Computer & Peripherals, Electronics Games Players & Home Appliances etc...Audio Dept. with her brand Alto-Acoustic was established since 2006 . The main product is Vacuum Tube Audio with Docking Station, with the impetus of Vacuum tube , the Amplifier can provide high quality acoustic sound. We devote ourselves to the Innovative Research & Development ,and always try our best to satisfy our customers with excellent designs and good service.iSource Engineering Co.,Ltd is the branch of the YiSheng Fu Electronic(SZ) Co., Ltd.Located in famous of Shenzhen, iSource Engineering involved in R& D of LEDs lighting applications, LEDs lighting fixtures design, High power LEDs drivers development, manufacturing, sales & services, together facilitates with Mold Fab, Injection Molding, HF transformers, EMI Filters, SPS ancillary factories layout, comfortable dormitory living life style and managed by a group of technically experienced professional management team.iSource Engineering sales network covered domestic market, export to Asean countries, The Middle-East and Europe, and other regions, supplying superb high quality LEDs energy saving lighting products to provide users with a great satisfaction.