Filosofi trade limited company is the founding enterprise of Tianrui Group and the designated manufacturer of rolling stock accessories of the Ministry of Railways. To produce a variety of large-scale railways, mines, axles, civil parts-based products. The company has four professional production plants. It covers an area of 1.6795 million square meters and a construction area of 200000 squaremeters. Total assets of 9.3 billion yuan, more than 2500 employees, 76 senior workers, 119 technical management and R & D personnel, 8 senior engineers. It hasan annual production capacity of 200000 tons of alloy steel castings.

The company has continued to grow in the incentive competition and became a domestic and international well-known enterprises in the similar industries. In the four years of China's railway speed-up transformation, the provision of large-scale railway accessories accounted for 35% of the total demand of the whole railway. It has strongly supported the railway speed-raising and reconstruction project in our country.