Shenzhen City HSN Communication Technology Co., Ltd is a professional manufacturer on R&D&production&sales SFP transceiver modules independently, the factory was founded in 2001,has strong strength of the production &advanced technology and equipment &professional R&D personals, CE&FCC&RoHS complaint,with superior quality and competitive price, the products sell well at home and abroad,is the major quality ODM&OEM manufacturers of Europe and the United States Brand. we also have our own brand "Hossnor". we developing new products advancing with the times continuously, Service for foundation, quality for survival, science and technology for development! Services need to experience, quality need to be inspected, HSN to be sincere with your inspection and experience!