危険物取扱者乙４養成所 – English

2026.08.13

mana

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mana

Hello! I am a working adult aiming to pass the Type 4 Otsu hazardous materials certification exam in Japan. I started this blog to deepen and share the necessary information and knowledge for the exam. I am currently studying and will soon challenge the exam myself. I hope this blog will provide exam information and learning tips, and that we can grow together.

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