Peb cov neeg siv khoom tshiab tau xaj cov tshuab radial drill thiab cov tshuab drilling thiab milling, thiab lawv tau npaj tiav lawm.
Peb ntseeg tias cov neeg siv khoom yuav txaus siab heev tom qab tau txais cov tshuab.
Lub sijhawm tshaj tawm: Lub Yim Hli-08-2022