... authentication, China Railway Construction Corporation (CRCC) certificate, AAR and UIC standard parts. 1. Rail Wheel 2.Standard: GB8601 ... certificate, AAR and UIC standard parts.We have already obtained TSI qualification for Y25Lsd1 tyoe bogie, Y25Lsd1 bogie welded frame, BA004 wheel set ... etc. Besides, if you special requirements about the railway parts, just send us your specifications and drawings, ...