... produce 20#, 20Mn,20#,20CrMo,20CrMnMo ribbonfil for motorcycle chain,bicycle chain(410,428,428H) . The thickness and width of ribbonfil ... -tailored.Why Choose Us ?1 Zhejiang Jianhong Chain Passing Material Co., Ltd. established in 2002 with more than 10 years' chain material ... you the update quotation accordingly. chain ribbonfil for motorcycle chain,bicycle chain(410,428,428H)