... bending and bearing pressure,and the outer layer is black in colour.6. Tube: SBR blended, red, smooth or ... 168153/810171/213225/816253/419301253611/4324350/10011/2384925162 Dongying Wangze Rubber & plastic Co., Ltd, is one of the ... leading manufacturers of rubber hoses in China. Our main products cover all ... reply soon.Best regards,Baozhong xiangExp. Manager black rubber air hose