SSQ has 35 years of production history. She has completed a number of technical projects related to bearing bush. Customers include all 5 new diesel engine manufacturers and 5 major repair plants of China Railway, 14 railway bureaus and dozens of medium repair sections.

In diesel engine bearing products, the company has accounted for about 70% of China's domestic market share, and It is the OEM of many famous Japanese marine diesel engine manufacturers in the Chinese factories.