by the end of 2017, we were approved by db through quality audit of railway bolt,forged clip and spring clips.

as the leading r&d institute of railway fastening, southwest jiaotong university cooperated with zbrf for the developing and researching railway fastenings.

we were awarded by suzhou science bureau the honor of tansit and railway fastening research center

by the end of 2014, we were approved by kz railway through quality audit