The new merchandise include a sequence of higher-tech and substantial high quality chains and sprockets and gears, such as chains and gearboxes for agricultural machineries, metallurgical chains, escalator phase-chains, large-speed tooth chains, timing chains, self-lubrication chains, amid which have sort higher velocity tooth chain for automobile branch dynamic box and aerial chains fill in the blanks of chain in China. We also can layout and make non-standard products to fulfill customers' unique demands. We examine each piece of bearing by ourselves ahead of delivery.