ISO series yeeb nkab beveling tshuab yog tsuas yog siv rau siab yeeb nkab beveling ua ntej vuam cov cuab yeej tshwj xeeb, hluav taws xob hluav taws xob kob rau qee qhov chaw ua hauj lwm yog txwv cov kav dej tu, kho cov yam ntxwv ntawm ntau qhov tsim thiab siv cov khoom tshwj xeeb.
