Duct quick coupling device, according to MT 165-2007 standard duct connection with the provisions of the soft manufacturing, PVC as material, extrusion molding process, the main port and a port for connecting duct, duct junction leakage prevention; is easy to operate, reliable connection, can be recycled and so on. For more information please contact: Business Contact: Mengyue Fei Contact phone: 18660761686 Business Want: zhongmei0326 business QQ: 2247579936 E-mail: zhongmeixz@163.com Company Address: 69 High-tech Zone, Jining City, Shandong Province torch Road