Flange muaj kev ua tau zoo, yog li nws feem ntau siv rau hauv kev tsim kho tshuaj, kev tsim kho, dej thiab tso dej, roj av, lub teeb thiab hnyav kev lag luam, tub yees, huv si, kav dej, hluav taws xob tiv thaiv, hluav taws xob, aerospace, shipbuilding thiab lwm yam engineering fields, Flanges yog cev...
Nyeem ntxiv