Tianjin Tong da yuan metal chain Co., LTD. It was established in 2006, our company produces the tyre protection chain is installed in a wheel loader heavy loader wheeled machinery equipment such as to improve the service life of tires, reducing the maintenance work, to lower the project construction cost, speed up the construction progress, at present the tyre protection chain is widely used for CaiKuangChang quarry road tunnel construction DAMS construction of homework, adapt to all kinds of bad ground.