... 45SH, 30UH-40UH, 28EH-38EH, 28AH-35AH4. Shape: Disc(Cylinder), Block, Ring, Countersunk, Segment and more, trapezoid, irregular shape, customized shapes ... so on.8. Advantages:Own ourselves R&D center, Quality control center and professional machine technicians, which can help to ... control well in quality, tolerance, process cost and delivery.9. ...