WIN SOURCE will be having New Year holiday from 5th February to 22nd February.

During this period ,we still accept your inquiries and orders, but all the shipment will be delayed until 22nd February.

Sorry for any inconvenience caused. Happy Chinese New Year!



SIFIRST TECHNOLOGIES NANHAI LIMITED was founded in 2009 and its headquarters is located in Foshan City. SIFIRST TECHNOLOGIES NANHAI LIMITED is committed to the development and sale of high-performance high-quality green power, digital power, lighting power chips in three major areas, the product power range covers 0.5W ~ 500W power range AC/DC applications. SF59XX series, SF60XX series, SF67XX series are the main product series

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