Triangular Pyramid – No Closure – Reduced Flap Closure C30.10.01.11 Triangular Pyramid – No Closure – Reduced Flap Closure C30.10.01.11 Production Team2021-05-18T21:58:43+08:00 ECMA C30.10.01.11 Triangular Pyramid - No Closure - Reduced Flap Closure