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サマリー
あらすじ・解説
In welding and cutting, people often use two gas cylinders including Oxygen (O2-oxygen) and Acetylene (C2H2). Many production workshops, mechanical groups in many factories pay little attention to safety in use. In this article, https://abbasia.asia/ introduces a part in choosing 3 types of welding gas conductors. In the next series of articles, we will expand
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