Shenzhen youlen electronics co.,ltd,established in 2003. is a national high-tech enterprise focusing on Memory Card R&D , Production,assembly and testing services, providing OEM/ODM services for buyers . Our products with patents have CE ,RoHS ,FCC...etc certifications .Reliable and stable quality ,competitive price,Full range after-sales service, ISO9001 Quality Management Certificate,IS014001 Environmental management system certification.We provide full range of data storage solutions for Surveillance video record,Security monitoring equipment, industrial equipment, drones, mobile phone,other digital products manufacturers. Main Products: Micro SD Card(TF card ) ,SD Card, USB Flash Drives,CF Card.