six categories 、≥200 kinds of cylinder liners (dry- , wet- , wind -cooling , water -type quenching) ,steel -tube chromium-coated products, fully size varying from φ75 ×75 to φ500×1500; supplier for domestic automobile groups such as the first and the second automobile works , heavy vehicle works, Nanjing automobile works etc. Exported to USA, Japan, E Europe and S-E Asia, HK, Taiwan and so on; Main exporting products DDA series for Universal, Cummins, Caterpillar series in America; Perkins, John Deer in England; Mitsubishi , Isuzu, Hino of Japan;