Chains and sprockets Drive Shaft escalator We are top 3 major supplier of sprockets for escalator in China. Customization process 1.Provide documentation:CAD, DWG, DXF, PDF,3D model ,STEP, IGS, PRT 2.Quote:We will give you the best price within 24 hours 3.Place an order:Confirm the cooperation details and sign the contract, and provide the labeling service 4.Processing and customization:Short delivery time