1、High quality, high cost performance, adopts full electroplating silver anti-rust and anti-corrosion, wear resistant and durable, instead of the traditional common color no electroplating chain. 2、How to identify the chain speeds problem, bicycle rear flywheel, speeds difference between the chain and the buckle is to see how many rows of teeth there are on the flywheel behind the bike. If there are 7 rows is 7, 10 rows is 10, and so on 3、All plating anti-rust treatment exit quality, wear resistant and durable, fine workmanship chain, high quality material and processing technology, all bright silver plating, anti-rust surface treatment. 4、High rigidity reinforced structure, strong impact resistance, has very strong small axle embedded force, can easily deal with the destructive force in the process of operation, let the trample force more effectively into the wheel forward power. 5、Professional manufacturing, suitable for most road bikes, mountain bikes, folding bikes.