WWIT1 gate WWIT2 bearings grinding machinery factory WWIT3 WWIT4 WWIT5 middle size bearings factory WWIT6 heat treatment factory WWIT7Product Line WWIT8 WWIT9 random inspection WWIT9-1outer surface grinding WWIT10 Automatic Assemble Plant WWIT11measuring lab WWIT12 finished product warehouse WWIT13 BEARING GRINDING MACHINE FACTORY WWIT14 GRINDING MACHINE FACTORY WWIT15 MEETING ROOM