light ,thin,easy to take,easy to use, can put LOGO for pomotion or your company brand specification ... Third:Can be used to read books,newspapers and so on.Forth:Can print LOGO according to your request.Feature ... of the business card,magnified three times ,ultraclear,print the ad.the picture below is the original ... on it.credit card size,easy-takenprint your LOGO or mark on it!!Cooper moulding board can ...