The 2100MPa-grade automobile suspension spring steel independently developed by Maanshan Iron & Steel has been first launched. It has reached the international advanced level and received the first trial order from Thyssenkrupp Fawer Liaoyang Spring Co., Ltd., replacing German imported spring for the Audi A6L, A4L, and Q5 automobile suspension spring localization project.

Spring is one of the main components of the automobile power system and is closely related to the automobile's shock absorption, energy storage, and tension maintenance.

The intellectual property barriers and prices are very high because the production technology was handled by a few foreign mills.