The factory was built in the early 1980s, the main production rig accessories, flexible sales, hollow rivets.

本厂建于80年代初，主要生产钻机配件，弹性销，空心铆钉。

youdao

The factory was built in the early 1980s, the main production rig accessories, flexible sales, hollow rivets.

本厂建于80年代初，主要生产钻机配件，弹性销，空心铆钉。

youdao