Hi dear, This is kara from chinaskyline. Now I am selling SMS Modem, which can send bulk sms, support AT command, we will provide sms caster and USB driver. SMS Modem 1/8/16/32/64 ports available.(2G/3G/4G) if you are interested, please contact me now! Skype:skyline.kara WhatsApp/wechat: +86 18211260112
