Evaluation board for SIMCOM A7670 modules designed by Valetron Systems
You should find majority of the details needed for using the hardware here

⚡ Introduction

A7670x-EVAL is a development board designed for SIMCOM A7670 4G LTE-CAT1 modules. It supports 3 different variants, A7670C (For Asia) , A7670E( For Europe), A7670SA (For South America)