| 品牌：CY | 型号：JM12 | 滑块行程：52 |
| 行程次数：5 | 用途：汽车五金零部件 | 规格：690*863*753 |
"D"-shape and "O"-shape rung with "C" or "I" profile by swage.
1.First processing by squeezing machine to swage to making double corrugation on rung.
2. Second step is to assembly the profiles to put ladder on another machine by squeezing
outside of profile.
