Hangzhou Dongxing Telecommunication Material Co.,Ltd is one of the professional China 300mm fire-retardant pvc fabric flexible air duct manufacturers and suppliers,Website:://.dxdxal.com, and equipped with a productive 300mm fire-retardant pvc fabric flexible air duct factory and company, welcome to contact us.Product Details    Key Specifications/Special Features:Material: PVC net fabricAvailable sizes: 4-60"Stock length: 5/10m, customized lengths are welcomeAvailable colors: orange, yellow, red, green, blue, black, white, grey and moreFeatures:Fire-retardant, tear and wear-proof, oleic acid and corrosion-resistant, anti-agingEnduring -20-80