Four-Cornered Truncated Pyramid – Self-Locking Envelope Closure – Tuck-In Flap Closure C20.20.55.20 Four-Cornered Truncated Pyramid – Self-Locking Envelope Closure – Tuck-In Flap Closure C20.20.55.20 Production Team2021-05-18T21:58:10+08:00 ECMA C20.20.55.20 Four-Cornered Truncated Pyramid - Self-Locking Envelope Closure - Tuck-In Flap Closure
