Jining Jinniu Heavy Industry Co., Ltd is located in Jining City which is one of the four major bases of construction machinery in China. It is a national high-tech private enterprise integrating research, development and production of construction machinery chassis parts. Its main products are track roller, carrier roller, idler, recoil spring ( tensioning device ), sprocket, chassis and casting products which are used for excavator, bulldozer, crawler crane and other crawler construction machinery equipments.It is supplying products For XCMG, SANY, LOVOL, LIUGONG, HBXG, TAKEUCHI, KOBELCO, CATERPILLAR and other construction machinery manufacturers. Its products are also exporting to Japan, UK, Russia, Netherlands, USA, Canada, Cuba, Australia, India and other countries.