WIO LTE 4G (AU version)

I am referring to product SCU 102991023. I need this product in Taiwan version. But it is shown out of stock in the Bazaar, please tell me when it will come back into stock so I can order it.

Also would appreciate a tip on how to use it with MQTT protocol stack. It’s not directly supported protocol, but I assume I can use a open source library and run it through the modem as IP Stream. Please confirm.