

An in-die roll forming device for the gear formation which is the spline at the circumference of an cylindrical material
专利第10-0832588号

Molding apparatus press for a height of stepped portion lamination
专利第10-1005859号

Mold device for corner simultaneous forming bending
专利第10-1015795号

电机的定子机芯层压方法
专利第10-1048624号

Injection mold equipped with weldless process
专利第10-1048625号

Stator core producetion apparatus and method of drum washing machine
专利第10-1077464号

电机机芯的层压粘贴装置
专利第0119014号

Apparatus for hollow injection molding and method therefor
专利第0140994号

금형 캐비티의 온도제어가 용이한 사출금형
专利第10-1201625号

A recursion an exhaust gas cooling device again
专利第10-0686934号

배기가스 재순환 장치 및 수냉식 인터쿨러의 딤플 플레이트튜브 및 그 제조 방법
专利第10-0716449号