熱硬化剤 (ねつこうかざい) — hardener (catalyst sa hardening thermosetting materials)
熱硬化剤
ね つ こ う か ざ い
Hardener (catalyst sa hardening thermosetting materials)
Panghahanap ng imahe

熱硬化剤 (ねつこうかざい) — hardener (catalyst sa hardening thermosetting materials)
