In April 2019, Tong Hi-Tech undertook the replication line reconstruction project of FAW-Volkswagen (Changchun Base) Welding and Welding Plant No. 2 and was responsible for the "turnkey project" of the new side wall door laser fusion welding station project for 3 types of vehicles including CCSB. The process was first developed in 2001 by ThyssenKnuber of Germany for a variety of high-end models of German Volkswagen and Audi. In recent years, it has been successfully introduced into the domestic market, mainly for the side panel inner and outer panel areas, which can realize multi-layer carbon steel plates. Compared with the narrow flange side of high-strength steel plate, compared with the traditional spot welding, it has many functional, technological and efficiency advantages:
