日韩超级波霸_最新中学生a片_日韩成人av在线看_欧美色青_可以直接看的av网址_日韩Av看片

The machine is a high-precision automatic CNC machining equipment suitable for grinding wheel diameter 900mm or less and thickness of 300mm or less. There are two stations for processing, loading and unloading, automatic centering to find the grinding wheel, one clamping, two grinding heads to process the inner and outer circles at the same time, strictly guarantee the coaxiality and precision of the inner and outer circle.