Precision stamping technology is said to have originated in Japan. After the imitation and innovation of Taiwan Province Jinfeng and Xie Yi Punches, domestic punch brands began to follow suit and gradually rose, and there are many brands today. However, due to the different management methods and technical levels of R&D manufacturers and different production and assembly, domestic punch brands are similar in appearance, but different in accuracy, speed and price. First, know the brand name of punch at home and abroad: Japanese punch series: AIDA. , YMADA, AMADA, DOBDY, Komatsu precision punch; Taiwan Province punch series: Jinfeng, Xie Yi, Yu Ying, Li Zhen Dongtai punch; Domestic punch series: Meeske, Gu 'anli, Aumart, Boxin, Bolun, Roewe, Liyang, Walker (Shanghai Second Forging), etc. Duan Xu, Yang Li and Ward's domestic second-class punching machines (mainly pneumatic precision punching machines) are classified according to tonnage and quality grade: large (over 800 tons): second-Jinfeng (Taiwan-funded)-Xie Yi (Taiwan-funded) ... medium-sized (300-600 tons): Jinfeng (Taiwan-funded)-Xie Yi (Taiwan-funded)-Dongtai (Taiwan-funded). Capital)-Xie Yi (Taiwan-funded)-Yu Ying (Taiwan-funded)-Li Zhen (Taiwan-funded)-Dongtai (Taiwan-funded)-Schor, Aumart, Misik, Taiyida, Boxin, Outai, Gu 'anli, etc ... Category II: Yangforging-Guangforging-Zheforging-All brands are well received by professionals and users in the punching industry. There are many brands of punching machines, and the prices and accuracy of domestic brands of punching machines are different. Users are advised to rationally choose punching holes.