... trailer turntable 1)Ball:Single,Double 2)Type:Z ,UA ,UB type 3)Casting,Forging 4)Certificate:ISO,TS16949 Full trailer ... turntable1)Ball:Single,Double2)Type:Z type,UA type,UB type3)Casting4)Certificate:ISO9001:2000 /TS16949 Tinmy Turntable factory can ...