The company founded in 1992 subordinate to Ningbo Xinghuo Technology Group and as members of China Liquid Seal Association and China Specially-Used-for-chemical-Industry Seal standardized Technology Committee, is located in Ningbo Jiangshan Science and Technology Zone, covering an area of 10, 800 square meters, 8, 200 square meters of which is used for building.

Ningbo Dongya Mechanical Seal Manufacturer is a professional manufacturer and exporter of mechanical seals, pumps, gaskets, O-rings and other sealing materials. The largest diameter of which can reach 350mm. The products are widely used in many fields, such as spacecraft machinery, metallurgy, printing and dyeing, foodstuff, pharmaceutical, auto industry and so on. Ningbo Donglian is able to design, measure and produce all kinds of out-of-standard and special mining mechanical seals.

Over 165 staff have been employed, including 28 technical personnel and engineers. Depending on technical and managerial personnel, computer-controlled management, advanced equipment for producing and testing mechanical seals, the company has been granted ISO 9002 and ISO9001-2000.