we are manufacture of USB�DDR RAM, Micro SD card, in Shenzhen, China. Here is the most sincerely business, for the moments we have partners from all around the world. We have our own factory in Shenzhen can offer you the best ex-factory price, we have our own experience sale-term can offer you the best advise to suit for your market! Your satisfication is our over pursit, so we emphasize strongly in value, quality and service! All of our products have earn the confidence of its customers and the recognition of the international safety agencies, like the FCC, CE, RoHS, etc. We aim to grow together with you all the time. Our long-term objective is to create more value for our partners, shareholders and the publics by using the latest technology! We would like to bring mutual benefits to each other! Waiting for your soon join in !