... diameter 30Height of coupling face,≤450Reference picturesInspection standardWhole trailer packageappearance,packaging film coveredwhole trailer logo,scutcheonattached accessory,not haveattached documents,user ... quality control requirement,no welding,painting defectappearance,packaging film coveringwhole trailer logo,scutcheonattached accessory,not haveattached documents,user manualkeysize,2000* ...