Our History
Ningbo Tengzhan Automotive Bearing Manufacturing Co., Ltd. (formerly Ninghai Tengsheng Plastic Co., Ltd.) is a professional manufacturer specializing in automotive shock absorber bearings and automotive parts. Founded in 2006, the company is located at No. 5, Houfan Road, Taoyuan Street, Ninghai County, Ningbo City. The company enjoys a superior geographical location, adjacent to the Yongtaiwen Expressway, 50 kilometers from Ningbo Lishe Airport, and only a 25-minute high-speed train ride from Ningbo to Ninghai, making transportation very convenient.
Since its establishment, the company has been deeply rooted in the automotive shock absorber bearing industry for many years, consistently prioritizing internal quality management, technological innovation, manufacturing process improvement, and after-sales service. Adhering to the business philosophy of "Smoother movement, greater stability; striving for excellence and creating a superior brand," the company continuously reduces energy consumption, strictly controls product quality, and fully meets customer needs. Equipped with injection molding machines, CNC lathes, punching machines, and various testing and performance testing equipment, the company has a monthly production capacity of over 1 million automotive shock absorber bearings and has obtained IATF 16949:2016 quality management system certification. With high-quality products and a good reputation, the company supplies products to many well-known domestic automotive shock absorber manufacturers, and its products are exported to Europe, America, and other countries.
Throughout its development, the company has experienced steady growth: sales reached 55 million RMB in 2019, increased to 78 million RMB in 2021, 75 million RMB in 2022, exceeded 93 million RMB in 2023, and reached 97 million RMB in 2024. In addition, the company is advancing a construction project with a total investment of 180 million RMB. This project covers an area of 42 acres, with a total construction area of 55,000 square meters, including 40,000 square meters under construction. It is specifically planned and built for an annual production capacity of 60 million sets of automotive shock absorber bearings. The project will be completed in 2024 and put into operation in 2025, creating an intelligent manufacturing workshop and fully implementing an integrated management system to further enhance customer service levels.
The company's existing factory layout is well-designed with complete functional divisions, including injection molding workshops, assembly workshops, shaping workshops, warehouses, a testing center, and laboratories. Production and operations strictly adhere to quality management system requirements.
The injection molding workshop features a panoramic production environment and is equipped with professional injection molding equipment and supporting facilities, enabling efficient production of plastic parts. The assembly workshop incorporates multiple automated production lines, including automatic assembly lines for plain bearings, friction plate bearings, and retaining ring ball bearings, achieving automated and standardized bearing assembly. The testing center and laboratory are equipped with various professional testing equipment, providing comprehensive quality inspection and performance testing for raw materials, semi-finished products, and finished products.
The new factory, scheduled to be operational in 2025, is a significant milestone in the company's development. With a total investment of 180 million RMB, covering an area of 42 acres and a total building area of 55,000 square meters, the new factory focuses on intelligent manufacturing, integrating advanced production equipment and management systems. It has a designed annual production capacity of 60 million sets of automotive shock absorber bearings, achieving a double leap in production capacity and efficiency, laying a more solid foundation for the company to expand its market and serve its customers.
Furthermore, the company possesses professional mold manufacturing capabilities, employing three mold designers with an average of over 5 years of experience. It is equipped with professional mold processing equipment such as precision engraving machines, machining centers, and electrical discharge machines. Each mold undergoes mold flow analysis before formal production to ensure mold quality and product molding effect.
The company's core products encompass three main categories, covering multiple series to meet diverse market demands:
Automotive shock absorber bearings are the company's flagship product, with a monthly production capacity exceeding 1 million units. This product features upper and lower raceways with an angular contact design, effectively bearing radial loads; the upper and lower covers utilize an internal and external sealing design, differing from conventional labyrinth designs, effectively preventing dust and dirt ingress; the lower cover incorporates a metal frame, significantly enhancing load capacity and preventing plastic deformation under impact.
Automotive shock absorber spring seats, as precision-machined products complementing the shock absorber bearings, possess excellent structural stability and durability, perfectly compatible with various types of shock absorbers.
Automotive hydraulic suspension plastic parts are high-performance products specifically developed for automotive hydraulic suspension systems, exhibiting excellent tensile and bending strength, meeting the stringent requirements of automotive suspension systems.
By region, the products are categorized into American, European, and Japanese/Korean series, each specifically designed to meet the technical standards and quality requirements of corresponding regional automotive brands, ensuring compatibility with different vehicle models.
In terms of material selection, the upper and lower raceways use 65Mn steel from China's largest manganese steel production base, exhibiting excellent mechanical properties and good hardenability. High hardness can be achieved through conventional quenching, ensuring both the strength and wear resistance of the bearing raceways while controlling quenching deformation; the upper and lower covers (plastic parts) undergo material design verification using CAE analysis software and Ansys software (simulating axial force of 5000N and lateral force of 980N). The upper cover uses PA66 GF30 material with a thin overall wall and even stress distribution, while the lower cover adopts a plastic inner frame structure to withstand concentrated forces.
The company's products are widely used in the automotive industry, primarily serving the OE (Original Equipment) and aftermarket segments. They cover passenger cars, commercial vehicles, and various types of electric vehicles, and are core components of automotive suspension systems, playing a crucial role in ensuring vehicle stability and comfort.
In the domestic market, the company provides supporting services to well-known automotive shock absorber manufacturers such as Top Group, Guansheng Group, Zhengyu Group, and Sigma Group. Its products are compatible with numerous domestic automotive brands including Dongfeng Motor, Geely, Liuzhou Wuling, Southeast Motor, Chery, and Haima. In the international market, the products are exported to countries and regions such as Europe, the United States, Brazil, Russia, and India, and the company has established stable cooperative relationships with international brands such as FEBI, Magneti Marelli, Fox, and Gold. Thanks to its reliable quality, the company has gained widespread recognition from both domestic and international customers.
The company's product sales network spans the globe, covering all regions of China in the domestic market and extending to numerous countries and regions internationally, securing a stable market share in both domestic and international automotive parts markets.
In terms of performance, the company's production scale continues to expand, with steadily increasing production capacity, placing it among the industry leaders. Sales revenue maintains steady growth, demonstrating strong market competitiveness and development potential.
Regarding customer cooperation, the company has established long-term and stable cooperative relationships with many well-known domestic and international enterprises, including renowned domestic shock absorber manufacturers, mainstream automotive brands, and internationally recognized automotive parts brands. The quality of its products and services has received high praise from customers, resulting in a strong market reputation.
The company adheres to the service philosophy of "customer first, dedicated service," and has built a comprehensive service system covering pre-sales, in-sales, and after-sales stages, committed to providing customers with high-quality and efficient service support.
In the pre-sales service stage, the company's professional team conducts in-depth communication with customers to fully understand their needs regarding samples, drawings, technical standards, and operating environments; provides customized product services according to customer requirements, leveraging its technical strength to independently design products that meet specific customer needs while conforming to OEM standards; and provides professional technical consulting, sharing product technical parameters, performance test reports, and other information to assist customers in product selection and matching, and conducts professional engineering reviews of customer-provided drawings, offering optimization suggestions to ensure product manufacturability and performance.
In the in-sales service stage, the company promptly provides customers with production progress updates, informing them of production status and key process information to ensure on-time delivery; strictly implements a quality control system, monitoring quality throughout the entire production process, and providing product quality inspection reports as required by customers; if on-site support is needed, the company will arrange professional technical personnel to visit the customer's site to provide equipment debugging, product assembly guidance, and other services; and coordinates with high-quality logistics partners to track logistics information in real time, ensuring safe and efficient delivery of products to customers.
In the after-sales service stage, the company has established a comprehensive after-sales response mechanism to quickly handle customer feedback and complaints, conducting in-depth analysis of customer issues, developing targeted solutions, and implementing them efficiently; provides after-sales tracking services, regularly following up with customers to understand product usage and customer satisfaction, collecting suggestions for improvement, and continuously optimizing products and services; for complex issues, the company will issue an 8D analysis report in the shortest possible time, identifying the root cause of the problem, and taking corrective and preventive measures to avoid similar problems from recurring; and provides product quality assurance in accordance with relevant agreements, promptly providing product replacement and repair services for quality problems not caused by human error, effectively protecting customer rights.