耐火被覆 (たいかひふく) — fire resistive covering; fireproof coating; fireproof covering
耐火被覆
た い か ひ ふ く
Fire resistive covering; fireproof coating; fireproof covering
画像検索

耐火被覆 (たいかひふく) — fire resistive covering; fireproof coating; fireproof covering
