Ningbo Tiansheng Seals Co., Ltd. was established in 1998. It is a technology-oriented high-tech enterprise, mainly engaged in the research and development, technical support and program design of sealing technology systems in nuclear industry, military industry, aviation, aerospace, shipbuilding, petrochemical and other related fields. The company is a national high-tech enterprise, a Zhejiang Province military-civilian integration demonstration enterprise, a qualified supplier to the petrochemical industry, nuclear power plants, and large equipment factories. The successfully developed graphite sealing material has independent intellectual property rights; it is at the leading level in the field of valve sealing and pipe sealing; after more than ten years, it has overcome the technical restricted area that has been monopolized by foreign companies for decades: it has successfully developed O-shaped and C-shaped sealing ring products and achieved a number of innovative results. It has independent intellectual property rights and has completely broken the monopoly of foreign companies on such seals. It is the leader in the localization of China's static sealing industry.
The company has advanced technology, fully automated production equipment, unique production technology and a complete quality management system. It has a CNAS testing center, a provincial high-tech enterprise research and development center, and has established academician expert workstations and postdoctoral workstations. In 2018, it was rated as a national model academician workstation. Establish cooperative relationships with universities and institutions such as Tsinghua University and East China University of Science and Technology.
The company has won more than 100 various honors and science and technology awards, including the second prize of the National Science and Technology Progress Award in 2010 and the second prize of the National Science and Technology Invention Award in 2018. It has independently developed more than 50 patents and participated in the formulation of more than 30 national and industry standards.

Tiansheng Company has gone through ups and downs for more than 20 years since its establishment, and has been working hard to move forward. We have gone through a road of struggle paved with hard work and sweat. We are grateful to all walks of life for their strong support and selfless care for Tiansheng, and to the dedicated employees who work hard in various positions!
With a long history and rapid development, Tiansheng today carries the ups and downs of more than 20 years of hard work, the entrepreneurial passion of hundreds of employees, and the difficult journey of realizing 'localization of nuclear power seals' represented by many experts in the company; it is our responsibility to provide high-quality seals for nuclear power, aerospace, and petrochemicals.
We know we have a long way to go! ! !
Sincerity leads to gold and stone, we will continue to work hard, constantly pursue first-class quality and service, and strive to be the leader in the high-end sealing field. We adhere to the corporate philosophy of 'teamwork, integrity and dedication, eternal innovation, and self-transcendence' to work hand in hand with customers at home and abroad for win-win cooperation; we sincerely welcome guests and friends from all walks of life to visit Tiansheng to seek common development and create brilliance.

serial number	Project name	Project location	client
1	C-type seal assembly for factory water pressure test	Fangjiashan, Ningde, Yangjiang Nuclear Power, etc.	Dalian Yizhong
2	Engineering cold test, hot test C-type seal assembly	Ningde, Hongyanhe	China General Nuclear Power Group
3	Engineering cold test, hot test C-type seal assembly	Fangjiashan, Fuqing	CNNC
4	Hainan Changjiang Nuclear Power Plant RCC-M1, 2, and 3 Level Pipe Flange Graphite Gasket Contract	Hainan Changjiang Nuclear Power Plant	CNNC
5	Procurement of nuclear grade sealing gaskets for Qinshan Third Nuclear Power Plant	Qinshan Third Nuclear Power Plant	CNNC
6	Guangdong Yangjiang Nuclear Power Unit 5-6 Nuclear Grade 3 Graphite Gasket Supply Contract	Guangdong Yangjiang Nuclear Power	China General Nuclear Power Group
7	Hongyanhe Nuclear Power Project Unit 5-6 LOT140R secondary circuit and auxiliary system metal graphite gasket contract	Liaoning Hongyanhe Nuclear Power Plant	China General Nuclear Power Group
8	Beijing Yanshan Project	Yanshan Petrochemical	China Petrochemical Corporation
9	Liaoning Dalian project	Dalian Yisheng	Yisheng Petrochemical Co., Ltd.
10	Zhanjiang Dongxing Project	Zhanjiang Petrochemical	China Petrochemical Corporation
11	Mitsubishi Chemical polycarbonate project	Sinopec Mitsubishi Polycarbonate (Beijing)	Sinopec Mitsubishi Chemical Polycarbonate (Beijing) Co., Ltd.
12	Dalian project	Dalian West Pacific	Dalian West Pacific Petrochemical Co., Ltd.
13	Foshan project	foshan	Total Petrochemicals
14	Gasoline hydrogenation device	Guangzhou Petrochemical	China Petrochemical Corporation