Dec. 2018
Zhejiang Manufacturing Team standards: Pressureless silicon carbide mechanical seal rings made by our company was promulgated through Zhejiang Brand construction Union.



Dec. 2017
ISO9001:2015/ISO14001:2015/OHSAS 18001.


 
Dec. 2017

Zhejiang Manufacturing Team Standards:ceramic mechanical seal rings with high purity and high Performance made by our company was
promulgated through Zhejiang Brand construction Union.



 
Nov. 2012
Zhejiang Patent Model Enterprise was awarded by Zhejiang Economic and Information Committee of Zhejiang Intellectual Right Bureau.


 
Aug. 2011
Ssic+ C self-lubricating mechanical seal rings became the national Key and original products


 
April, 2011
Self-researched and developed Ssic + C mechanical seal rings got the approval from the innovation fund of the national small and medium enterprises


 
May, 2010
NT-60 light tungsten carbide became the National Key and Original products


 
Nov. 2008
The first drafting unit of the industry standard :Ceramic mechanical seal rings technology standards.


 
Aug. 2008
National High-tech enterprise


 
Nov. 2006
The ceramic seal rings with high purity 99.5% ceramic was certified to be National Key and Original Products


 
March, 2006
Cooperated with Beijing Scienc and technology University to establish Donglian Sub-office


 
Dec 2005
ISO14001:2004


 
Nov. 2005
Zhejiang High-tec enterprise was approved


 
Oct. 2005
Moved to 6 Mingshu road,jiangshan Science and Technology Zone, a coverage of 32000 square meters and a building area of 25000 square meters


 
Aug. 2005
Ningbo High-tech enterprise was awarded


 
April, 2000
Ningbo Donglian Mechanical Seal Co.,Ltd was established to carry out the import & export.


 
Nov. 1999
ISO9001 was carried out.


 
June, 1998
ERP system was initiated to use less paper


 
Oct, 1994
Ningbo Dongya mechanical seal manufacturer replaces the above-mentioned name.


 
Sept. 1991
Ningbo Yinxian Jiangshan seal accessory factory was set up by Mr. Li Youbao.