China high precision stud bolt b7 umenzi wentsimbi yangaphakathi intonga enentambo
Ibholithi yaseTshayina echanekileyo ephezulu ye-b7 yomenzi eyenziwe ngentsimbi yetrapezoidal intonga epheleleyo yangaphakathi yentsimbi ephothiweyo.
Bhala umyalezo wakho apha kwaye uwuthumele kuthi