... 1) Chain roller blinds are consisted by the components of chute, clutch, chain, code, bottom rail, fabric etc. ... brittleness and distortion. Chain bead of roller blinds Chain roller blinds should use different chain bead according to the ... little expensive, used in high and heavy blinds Chain Roller Blinds Schedule SystemOuter DiameterDense ChainThin ChainStainlessChainApplied AreaLoading weightHelper ...