Which four companies are the "four masters" of automobile panel dies? Urgent! Thanks again

Large plastic molds-Haier, Huawei, Qundaxing;

Precision stamping dies-Guo Sheng and Hua Fu;

Automobile tire mold-giant wheel, heroic;

Casting molds-FAW Casting, Ningbo Heli, Guangzhou Cavity, Wang Hui Beilun;

Precision plastic molds-Waco (Xiamen) and Ningbo Yokogawa have played a leading role in the progress of the industry.

Extended data:

Compared with the common stamping die, the specific volume of the panel is larger, and the casting formability should be considered. The shape should not be too complicated and difficult to form, so it is mainly suitable for the die of automobile parts.

There are also certain requirements in the design process, such as reinforcing ribs, which have been standardized.