Profile: Guindy Machine Tools Limited. is a manufacturer of granite surface plates and cast iron surface plates. We are an ISO 9001:2008 certified company. Our products include granite surface plates, surface plates, cast iron surface plates, surface plate, grainte straight edge, straight edge granite, granite master squares, master squares, master cylinders, master cylinders device, angle plates, industrial angle plates, box angle plates, box plates, straight edge and cast iron straight edges. our granite straight edges used in black granite materials, spirit level, electronic level and all kinds of reference surfaces.