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0.6mm 0.9mm 1.2mm Thick Steel Wire Reinforced Flexible Polyurethane Duct Ventilation Hose, Find Details and Price about PU Steel Wire Hose Vent Pipe from 0.6mm 0.9mm 1.2mm Thick Steel Wire Reinforced Flexible Polyurethane Duct Ventilation Hose - Weifang Rongheng Plastic Co., Ltd