Special telephone calls are a subsidiary of the triede, which is mainly involved in three main areas: electricity equipment manufacturing, auto-charging ecological networks and new energy micronets, with 10 major research and development centres and over 1,000 proprietary technologies worldwide. The project aims to create china's largest vehicle-charging ecological network, providing easy and efficient charging services to users of electric vehicles through the layout of “coin-free charge” and innovative charging technologies. Development history: in 2014, triede intends to invest $600 million in the project to expand car charging, to establish a special call company and to initiate an electric car cluster control technology route and a “modular structure” for the charge network. In 2015, the electricity electronics research and development centre was established in xi'an to launch the cms active protective, soft charged smart system. In 2016, the big data ecological cloud platform was launched to open a new era of charging grids, car networking and the internet. In 2017, a two-way integration system was launched for “car charging grids” and “new energy micronets”. In 2018, the first “charging, voltage, reservoir” smart shed was created, with ad hoc charging exceeding 1 billion degrees. In 2019, the “real-time grid detection and large data analysis techniques” for the safety of new energy vehicles were released. In 2020, the first new energy micro-grid technology was introduced, focusing on “charge, discharge, energy storage, photovoltaic”. In 2023, a 4. 0-filled smart cluster product was launched using two emerging technologies, power cascades and modifiable power pool extension. Special calls are distributed widely throughout the country and have a large network of chargers. At the same time, it is actively involved in the development of priority industrial policies and development plans for new energy vehicles, exploring innovative developments in new energy industries. For example, investments were made in shanghai to build the first demonstration station of a new integrated energy vehicle charge (replacement) service, which combines “pv+power + high power quick charge + ltm+ power discharge (v2g)+ power exchange”。