1.It is wildly used in straightening machine ,Large Steel Mills, Heavy-duty Machinery,Crane, metallurgical Industry,
  Shipbuilding Industry, Mining Industry,Autotrucks,Hydropower Station,
  Nuclear Power Station, Construction Machinery,Paper Machinery and other heavy machinery industry.

2.ISO9001-2000 (The Production and After-sale Service of Coupling Device and Its fittings)

3.OEM manufacturer(about ten years)