| 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 | |
| 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 Science 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. | |