Our company is located in Qingdao, China, we are specialized in producing high precision devices by the use of granite stone, using best quality granite of "Ji'nan Black" as major raw material. We are now able to produce up to 10 series and over 40 models of different items. Orders with special specifications or for a wide range of granite machine parts are also accepted, which may include such parts as bases, beams, guide ways and columns as used on CMM or drilling and milling machines for PC board etc. The bench center is a newly developed product designed specially for measurement of both radial and axial run-out of any cylindrical or disk-like work-pieces. Other precision granite components are also available.