安全性確認

** Prompt: "Construction site, close-up of a materials testing engineer (建設材料試験技士) in a hard hat, inspecting concrete with a magnifying glass. Focus on quality control (品質管理) and ensuring structural integrity. Modern Japanese construction aesthetics, slightly desaturated colors, realistic." **
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建設材料試験 기사 자격증、有効活用術を知らずに損してませんか？知らないと差がつく活用法を徹底解説！

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