Hauv kev lag luam hnyav, weldments ua lub luag haujlwm tseem ceeb hauv cov qauv thiab kev ua haujlwm ntawm ntau yam khoom. Cov khoom siv ua haujlwm hnyav no yog siv rau ntau yam kev siv, suav nrog engineering machinery, siv tshuab, tshuab dav dav, khoom siv tshwj xeeb, thiab txawm tias lub nkoj tsim kev lag luam ...
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