Dear partner,
This is Jennie from Chinaskyline Co.,ltd. We are manufacturer of bulk sms modem , can support gsm and 3g network.SK16-64 and goip 32 hotselling
Warranty for hardware is one year, free tech support forever. We can provide free software for our modem.
If you take good quantity,we can give a beter discount price.
My skype: +8617688932617
what's app: +8615079669301