مجلس قناة شرطة التدخل السريع

As modern commercial buildings place higher demands on energy efficiency, environmental performance, and installation efficiency, PIR pre-insulated duct (Polyisocyanurate duct) materials are becoming increasingly popular in HVAC systems. Compared with traditional galvanized iron (GI) duct systems with external insulation, PIR duct materials provide better thermal insulation, lighter weight, and higher system integration, helping improve the overall operating efficiency of […]