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 Donglian is specialized in producing friction-resistant sub-material seal rings in Sic, Ceramics(99.9%),Tungsten Carbide and Carbon Graphite and mechanical seals, the largest diameter of which can reach 350 mm, 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.