ABOUT US

Ningbo Hanji Polymer Materials Co., Ltd. (Ningbo Zhuosi Materials Technology Co., Ltd.), established in 2009, is located in Cixi City, on the south bank of Hangzhou Bay in Ningbo, Zhejiang Province. It is a national high-tech enterprise specializing in the research, development, production, and sales of polymer materials such as TPE, TPV, PP, and PVC.


IATF 16949:2016 certified, we specialize in automotive interior and exterior trims, sealing systems, and custom components. Backed by robust in-house R&D and patented technologies, we deliver innovative solutions trusted by leading automakers, including BMW Group, Mercedes-Benz, Toyota, Nissan, General Motors, Volkswagen, Chery, Geely, and BYD.

Read More
  • 17 +

    Innovative Experience

  • 150 +

    Cooperative Customer

  • 350 +

    Vehicle Use Experience

  • 20 +

    Has 20 Patents.

Application Area

Corner window encapsulation injection molding

Corner window encapsulation injection molding

Automotive injection molded trim parts are non-structural decorative and sealing components formed through injection molding in automotive interior and exterior trim systems. They are widely used to enhance the appearance of vehicles, achieve functional integration, and reduce manufacturing costs. Our TPV, PVC, and PP series products feature high design freedom, strong material customization, and a wide range of surface treatments. Appearances include high gloss, matte, textured, and multi-color finishes, meeting various processing requirements such as two-color injection molding, soft and hard injection molding, and one-piece molding. Our product range covers the entire spectrum from basic clips to complex trim strips.

Read More
Sunroof edging injection molding

Sunroof edging injection molding

Sunroof injection-molded edge strips are specialized sealing components for the edges of automotive sunroof glass. Molded in one piece using injection molding, they are key components for ensuring sunroof sealing and shock absorption. During use, they must withstand long-term UV exposure, high and low temperature cycles, and rain erosion, requiring extremely high weather resistance and dimensional stability of the materials. Our TPV, TPS, and PVC series products not only meet these high material requirements but are also easy to process and cost-effective, making them suitable for various passenger vehicle sunroof applications.

Read More
Internal and external water cutting

Internal and external water cutting

As a core component of the vehicle door sealing system, the internal and external water-cooling shears perform multiple functions, including waterproofing, dustproofing, noise reduction, and glass guidance. Our company uses highly elastic, low-friction coefficient polymer-modified materials to ensure smooth operation on the glass contact surface, effectively reducing lifting noise. They also possess excellent sealing performance, resistance to paint corrosion, and low-temperature toughness, preventing glass vibration and abnormal noise, providing end-customers with a quiet and comfortable driving experience.

Read More
Front and rear edge trim

Front and rear edge trim

Front and rear windshield edge trims are sealing and decorative components for automotive glass edges, primarily used on the windshield and rear window. They not only serve an aesthetic purpose but are also crucial components for ensuring vehicle sealing, noise reduction, and waterproofing. Our company uses TPV, TPS, and modified PVC materials with excellent weather resistance and UV aging resistance to ensure a firm bond between the edge trim and the glass and vehicle body. This effectively absorbs driving vibrations, prevents glass loosening and rattling, and maintains long-term sealing integrity and aesthetics.

Read More
Various Trim Strips

Various Trim Strips

Automotive trim strips are decorative components on automobiles that serve both body protection and aesthetic enhancement, requiring high standards for material appearance, dimensional accuracy, and weather resistance. Our company offers high-performance modified TPV, TPS, PVC, and PP materials that combine excellent weather resistance with a wide range of aesthetic options. Leveraging our strong customized development capabilities, we can quickly match exclusive formulas for our clients, ensuring the long-term reliability and aesthetics of our trim strips and contributing to the overall upgrade of the vehicle's interior and exterior quality.

Read More
Guide groove

Guide groove

As a key sealing component in automotive doors, windows, and body systems, guide channels require extremely high standards for material sealing performance, wear resistance, weather resistance, and dimensional stability. Our company uses independently developed high-performance TPV and TPS modified materials, which possess excellent resistance to ozone, high and low temperatures, and UV aging, ensuring that the guide channels maintain reliable sealing and smooth sliding during long-term use.

Read More

PRODUCTS

With over a decade of dedicated research and development in modified polymer materials, we have established four major product systems: TPE, TPV, PVC, and PP. Our products combine functionality, performance stability, and processing adaptability, perfectly matching the needs of various processes such as extrusion, injection molding, and calendering. They are widely used in key component fields such as automotive sealing strips, edge banding strips, interior and exterior trim, guide channels, and internal and external water jets.

TPV
TPS
PVC
PP
TPV
TPS
PVC
PP
CUSTOMER
(Only showing the cooperative relationship does not represent the official brand recognition)

Sustainable Development

People-oriented, environment-friendly, green development, and realize the harmonious symbiosis between human beings and nature.

Read More