Automatic Air Duct Production Line Machine (HHMC) Tengzhou City Huahai New Thermal Insulation Material Co., Ltd. Base Info Automation:AutomaticModel NO.:HHMCTrademark:HuahaiOrigin:ChinaHS Code:84778000 Description Pre:Stretch Bottle Blowing Machine (HB-3000) Next:Huahai PU Foam Air Duct Panel Producting Line (HH-MC)