釜 本 事 務 所
OFFICE ＫＴＫ
For inquiries or information
TEL: +81-80-1928-8778
（売り込み営業、返信情報なしの利用は厳禁です。
Sales pitches and/or use without reply information strictly prohibited.）
Business hours
9:00 ~ 17:00 (Monday ~ Friday)
Discoveries and Inventions That Anyone Can Make
2.5 Proving by yourself
日本語版と英語版で交互に連載中です。
Serially posted in Japanese and in English alternately.