The liner that our factory produced can be divided into the manganese steel liner and middle carbon chromium alloy steel liner, high-alloy steel liner, middle carbon low-alloy steel liner, high chromium iron casting liner and hammer, roller ,table liner etc. The liner is using for cement mill, ore mill and coal mill in cement plant or mine or thermal power plant, and also using for vertical mill and self wear mill etc. The wear resistance of it in using the course is very good, and it does not become deformed, not broken, and can raise the mill machine productive forces, and also reduce the mill machine stopping machine time, the service life is 2-3 times than the ordinary high manganese steel liner.