Ningbo Donglian Mechanical Seal Co.,Ltd./Ningbo Dongya Mechanical Seal Manufacturer(Dyseals),formed in 1992,is a National High-tech enterprise with Provincial Research and Development Center with advanced management: ERP systems and remote operation.A coverage of 32000 square meters and a building area of 28000 square meters,an existing Staff of over 300. Products: mechanical seals, mechanical seal rings, shafts and bushes/sleeves in ssic, sic, ceramic, tungsten carbide and carbon, bullet-proof plates and body armours in ssic, sic, ceramic and boron carbide. The ceramic plates which we researched and developed were successfully assembled in the space experiment room called Tiangong 2 in 2015.

ISO9001-2015/ISO14001/FDA