dear sir/ madam , good day ! this is bella, the sales manager of dusen electronics (professional computer parts manufacturer). i am very glad to know from alibaba that you are interested in this field, which is just in our lines. so, we would like to take this opportunity to introduce our company to you and to see if any possibility to do business with you. our products include sdram/ddram memory ,usb fdd, usb cdrom, usb dvdrom, ide cdrom, ide dvd writer/cd writer. there are more than 50 models can be choosed. now, our most partners have lg international, markvision, samsung group and so on. trough cooperating with these famous company, we have accumulated abundant experiences in company managation and controlling the quality of drives.