_{The workshop is fully equipped with automatic cutting, folding, welding and drilling machines. The drum of the ball mill has annealing furnace for heat treatment. The gear rings can be manufactured as big as 5 meters diameter. All the gear rings are subject to flaw detection. Different linings are available and installed based on differnet applications. The classifier hausing is precisely manufactured particularoy the parts of sealings. The classifier wheels are made of hard steel. After machining the wheels are dynamically balanced on the dynamic balancing machines. Anti-wearing material,such as Al2O3 tiles, PU... etc may be applied if necessary. All the equipment must be strictly inspected beore leaving the factory.}