Plastic Roller Chain Huangshan Dingqi Chain Drive Co., Ltd. Base Info Structure (for Chain):Roller ChainTrademark:DingQiSpecification:CE; SGSOrigin:ChinaHS Code:731512 Description Pre:Acme Lead Screw for Stepper Motor Next:Color Chainwheel and Crank, Bike Chainwheel and Crank, Bike Sprocket Crank, SGS Certification (Aft-PT-007