Ingilazi eqoqa ukukhanya

Amasondo wesondo le-Railroad ayisihluthulelo sokuqinisekisa ukusebenza okuphephile kwezitimela. Esezinhlelweni zokuthola ukukhiqizwa kwe-zero-defect, abakhiqizi bezitimela be-railst kumele balawule ngokuqinile zonke izinyathelo zenqubo yokukhiqiza, kanye nokuphuma kwe-pass-fit curve kusuka kumshini ogcwele wesondo kuyinkomba ebalulekile yomhlangano we-Wheelset.