TIG Vuam yog dab tsi: Txoj Cai, Kev Ua Haujlwm, Cov Khoom Siv, Kev Siv, Qhov Zoo thiab Qhov Tsis Zoo Niaj hnub no peb yuav kawm txog dab tsi yog TIG vuam nws txoj cai, kev ua haujlwm, khoom siv, daim ntawv thov, qhov zoo thiab qhov tsis zoo nrog nws daim duab.TIG stands rau tungsten inert gas vuam los yog tej zaum t ...
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