Cotton canvas for rubber canvas,pure vinrigin raw material, suitable for rubber industry,The only kind in China. Pure cotton fabric for rubber canvas :21s/18*12Yarn:21sYarn count:21s/18*12Density:25*16Thickness: 1.70mmWidth: 120cm/47"1.The 100% pure cotton canvas,Environmental pollution-free.2.The only-kind,patent product in China3. Large yarn count, high density4/ Suitable for rubber industry