Project name,installation site Large-scale shopping center Date of construction 2005 / 06 Date of investigation 2023 / 02 Duration 17 Years Specification of ZAM™ 1.2㎜K27 Photo of the project(early years) Overall view of the duct Photo of the project (Aging) Oblique view of the duct Side view of the duct Enlarged side view of the duct End face of the duct