The railings and guides are made of aluminum/copper sleeves or self-lubricating guide sleeves, which have a special wear resistance and low friction coefficient.it dramatically increases the life service of the draw bar.
Others news:
The railings and guides are made of aluminum/copper sleeves or self-lubricating guide sleeves, which have a special wear resistance and low friction coefficient.it dramatically increases the life service of the draw bar.
Another news:
